Updated on 2026/03/20

写真a

 
UMEBAYASHI Yasuhiro
 
Organization
Academic Assembly Institute of Science and Technology Fundamental Sciences Professor
Faculty of Science Professor
Graduate School of Science and Technology Fundamental Sciences Chemistry Professor
Title
Professor
External link

Degree

  • 博士(理学) ( 1997.3   九州大学 )

Research Interests

  • 錯体化学

  • Complex Chemistry

  • Solution Chemistry

  • 溶液化学

Research Areas

  • Nanotechnology/Materials / Fundamental physical chemistry

  • Nanotechnology/Materials / Energy chemistry

  • Nanotechnology/Materials / Analytical chemistry

  • Nanotechnology/Materials / Inorganic/coordination chemistry

Research History (researchmap)

  • Niigata University   Professor

    2012.4

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  • Kyushu University   School of Sciences, Department of Chemistry   Associate Professor (as old post name)

    2002.10 - 2011.3

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  • Kyushu University   School of Sciences, Department of Chemistry   Research Assistant

    1998.10 - 2002.9

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  • Kyushu University   School of Sciences, Department of Chemistry

    1998.4 - 1998.9

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Research History

  • Niigata University   Graduate School of Science and Technology Fundamental Sciences Chemistry   Professor

    2012.4

  • Niigata University   Faculty of Science Department of Chemistry   Professor

    2012.4 - 2017.3

Education

  • Kyushu University   Graduate School, Division of Natural Science

    - 1997

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  • Kyushu University   理学研究科   化学

    - 1997

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    Country: Japan

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  • Kyushu University   Faculty of Science

    - 1989

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  • Kyushu University   School of Sciences   Department of Chemistry

    - 1989

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    Country: Japan

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Professional Memberships

 

Papers

  • Designing borate-based lithium ionic liquids with high lithium ionic conductivity

    Hikari Watanabe, Yuya Tabata, Jihae Han, Isao Shitanda, Masayuki Itagaki, Yasuhiro Umebayashi

    Journal of Molecular Liquids   440   128984 - 128984   2025.12

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    Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.molliq.2025.128984

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  • Solvation structure of Li+ in highly concentrated LiTFSA–DMSO solutions studied by means of neutron diffraction with 6Li/7Li isotopic substitution method

    Yasuo Kameda, Yuko Amo, Takeshi Usuki, Yasuhiro Umebayashi, Hikari Watanabe, Kazuhide Ueno, Kazutaka Ikeda, Takashi Honda, Toshiya Otomo

    Bulletin of the Chemical Society of Japan   98 ( 3 )   2025.3

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    Publishing type:Research paper (scientific journal)   Publisher:Oxford University Press (OUP)  

    Abstract

    Time-of-flight neutron diffraction measurements for 6Li/7Li isotopically substituted 20 mol% *LiTFSA–DMSO-d6 solutions have been carried out to investigate the solvation structure of Li+ in a highly concentrated DMSO solution. Structural information on the nearest-neighbor Li+…DMSO interaction has been determined by using the least squares fitting procedure of the observed difference interference term, ΔLi(Q). It has been revealed that 4.1(2) DMSO molecules are involved in the first solvation shell of Li+ in the present solutions. The nearest-neighbor Li+…ODMSO distance and bond angle, ∠Li+…ODMSO = SDMSO, have been determined to be 1.96(3) Å and 138(15)°, respectively.

    DOI: 10.1093/bulcsj/uoaf020

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    Other Link: https://academic.oup.com/bcsj/article-pdf/98/3/uoaf020/62266437/uoaf020.pdf

  • Experimental determination of the relationship between S=O bond length and its stretching frequency of the DMSO molecule

    Yasuo Kameda, Yuto Oshita, Yuko Amo, Takeshi Usuki, Hikari Watanabe, Yasuhiro Umebayashi, Kazutaka Ikeda, Takashi Honda, Toshiya Otomo

    Bulletin of the Chemical Society of Japan   97 ( 11 )   2024.10

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    Publishing type:Research paper (scientific journal)   Publisher:Oxford University Press (OUP)  

    Abstract

    Time-of-flight neutron diffraction, x-ray diffraction, and attenuated total reflection infrared spectroscopic measurements have been carried out for pure deuterated dimethylsulfoxide (DMSO-d6), concentrated 20 mol% lithium bis(trifluorosulfonyl)amide–DMSO-d6, 14 mol% LiCl–DMSO, and 3 mol% NiCl2–DMSO solutions in order to obtain the relationship between the intramolecular S=O bond length (rSO) and its stretching vibrational frequency (νSO) in the liquid state. The S=O bond length of the DMSO molecule has been determined from the least-squares fitting analysis of neutron and x-ray total interference terms observed in the high Q-region. The νSO–rSO plot that involved the present results and experimental data reported for gaseous and crystalline DMSO as well as DMSO complexes with metal ions has indicated that the νSO–rSO relationship is well approximated by a linear function. The value dνSO/drSO = −3,600 ± 400 cm−1Å−1 was obtained from the slope of the fitted function. It has been revealed that the S=O bond length of the DMSO molecule sensitively reflects the intermolecular interactions that it is receiving from its environment.

    DOI: 10.1093/bulcsj/uoae120

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    Other Link: https://academic.oup.com/bcsj/article-pdf/97/11/uoae120/60813053/uoae120.pdf

  • Speciation and dipole reorientation dynamics of glass-forming liquid electrolytes: Li[N(SO<sub>2</sub>CF<sub>3</sub>)<sub>2</sub>] mixtures of 1,3-propane sultone or tetrahydrothiophene-1,1-dioxide

    Yasuhiro Umebayashi, Erika Otani, Hikari Watanabe, Jihae Han

    Faraday Discussions   2024

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    Publishing type:Research paper (scientific journal)   Publisher:Royal Society of Chemistry (RSC)  

    Li[(CF<sub>3</sub>SO<sub>2</sub>)<sub>2</sub>N] mixtures with propane sultone or sulfolane, newly termed as glass-forming liquid electrolytes, exhibited large-size aggregate (AGG) formation via speciation and dipole reorientation. The AGGs may be crucial for the unique Li<sup>+</sup> conduction.

    DOI: 10.1039/d4fd00050a

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  • Experimental determination of relationship between intramolecular bond lengths and their stretching vibrational frequencies of <i>N,N</i>-dimethylformamide and acetonitrile molecules in the liquid state

    Yasuo Kameda, Yuko Amo, Takeshi Usuki, Hikari Watanabe, Yasuhiro Umebayashi, Kazutaka Ikeda, Takashi Honda, Toshiya Otomo

    Bulletin of the Chemical Society of Japan   97 ( 2 )   2023.12

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    Publishing type:Research paper (scientific journal)   Publisher:Oxford University Press (OUP)  

    Abstract

    Time-of-flight (TOF) neutron diffraction measurements have been carried out on pure liquid deuterated N,N-dimethylformamide (DMF-d7), acetonitrile (AN-d3), and their concentrated LiTFSA solutions to investigate the effect of intermolecular interaction to intramolecular bond lengths, rCO, of the DMF and rCN of the AN molecules in the liquid state. Intramolecular parameters of DMF and AN are determined by least-squares fitting analyses of neutron total interference terms observed in the high-Q region. Attenuated total reflection (ATR) IR spectra have been measured for pure liquid DMF, AN, and their LiTFSA solutions of natural abundances to determine the average C=O and C≡N stretching vibrational frequencies (νCO and νCN) of the DMF and AN molecules, respectively. The relationships between rCO and νCO for DMF, and between rCN and νCN for AN, are well approximated by linear functions. The value, dνCO/drCO = −3,400 ± 1,600 cm−1 Å−1 has been derived for DMF from the slope of the fitted function. dνCN/drCN = −7,000 ± 3,000 cm−1 Å−1 has been obtained for AN. It has been revealed that the C = O bond length of the DMF and the C≡N one of the AN molecules are sensitively affected by intermolecular interaction.

    DOI: 10.1093/bulcsj/uoad006

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    Other Link: https://academic.oup.com/bcsj/article-pdf/97/2/uoad006/56945836/uoad006.pdf

  • Discharge Behavior within Lithium–Sulfur Batteries Using Li–Glyme Solvate Ionic Liquids

    Hikari Watanabe, Yuto Sugiura, Shiro Seki, Jihae Han, Isao Shitanda, Masayuki Itagaki, Yasuhiro Umebayashi

    The Journal of Physical Chemistry C   127 ( 14 )   6645 - 6654   2023.4

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    Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society (ACS)  

    DOI: 10.1021/acs.jpcc.3c00447

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  • Analytical chemistry toward on-site diagnostics

    Jihae Han, Mika Ishigaki, Yukiko Takahashi, Hikari Watanabe, Yasuhiro Umebayashi

    Analytical Sciences   39 ( 2 )   133 - 137   2023.2

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    Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    DOI: 10.1007/s44211-023-00271-2

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    Other Link: https://link.springer.com/article/10.1007/s44211-023-00271-2/fulltext.html

  • Neutron Diffraction with <sup>34</sup>S/<sup>nat</sup>S Isotopic Substitution Method on the Solvation Structure of S<sub>8</sub> Molecule in Concentrated CS<sub>2</sub> Solutions

    Yasuo Kameda, Nana Arai, Yuko Amo, Takeshi Usuki, Jihae Han, Hikari Watanabe, Yasuhiro Umebayashi, Seiji Tsuzuki, Kazutaka Ikeda, Toshiya Otomo

    Bulletin of the Chemical Society of Japan   2022.9

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    Publishing type:Research paper (scientific journal)   Publisher:The Chemical Society of Japan  

    DOI: 10.1246/bcsj.20220221

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  • Tools for studying ion solvation and ion pair formation in ionic liquids: isotopic substitution Raman spectroscopy

    Hikari Watanabe, Nana Arai, Jihae Han, Yui Kawana, Seiji Tsuzuki, Yasuhiro Umebayashi

    Analytical Sciences   38 ( 8 )   1025 - 1031   2022.8

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    Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

    DOI: 10.1007/s44211-022-00121-7

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    Other Link: https://link.springer.com/article/10.1007/s44211-022-00121-7/fulltext.html

  • Ionic conduction within non-stoichiometric N-Methylimidazole-Acetic Acid Pseudo-Protic ionic liquid mixtures

    Hikari Watanabe, Nana Arai, Han Jihae, Yui Kawana, Yasuhiro Umebayashi

    Journal of Molecular Liquids   352   118705 - 118705   2022.4

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    Publishing type:Research paper (scientific journal)   Publisher:Elsevier BV  

    DOI: 10.1016/j.molliq.2022.118705

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  • Local Structure of Li+ in Superconcentrated Aqueous LiTFSA Solutions

    Hikari Watanabe, Nana Arai, Erika Nozaki, Jihae Han, Kenta Fujii, Kazutaka Ikeda, Toshiya Otomo, Kazuhide Ueno, Kaoru Dokko, Masayoshi Watanabe, Yasuo Kameda, Yasuhiro Umebayashi

    The Journal of Physical Chemistry B   125 ( 27 )   7477 - 7484   2021.7

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    Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society (ACS)  

    DOI: 10.1021/acs.jpcb.1c04693

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  • Thermodynamic and Structural Aspects of Solvate Ionic Liquid Formation Reviewed

    Yasuhiro Umebayashi, Nana Arai, Hikari Watanabe

    Next Generation Batteries   287 - 300   2021

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    Authorship:Lead author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Springer Singapore  

    DOI: 10.1007/978-981-33-6668-8

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    Other Link: http://link.springer.com/content/pdf/10.1007/978-981-33-6668-8

  • Thermodynamic aspect of sulfur, polysulfide anion and lithium polysulfide: plausible reaction path during discharge of lithium–sulfur battery Reviewed

    Seiji Tsuzuki, Tomoaki Kaneko, Keitaro Sodeyama, Yasuhiro Umebayashi, Wataru Shinoda, Shiro Seki, Kazuhide Ueno, Kaoru Dokko, Masayoshi Watanabe

    Physical Chemistry Chemical Physics   23 ( 11 )   6832 - 6840   2021

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    Publishing type:Research paper (scientific journal)   Publisher:Royal Society of Chemistry ({RSC})  

    DOI: 10.1039/D0CP04898D

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  • Solvation Structure of Li+ in Concentrated Acetonitrile and N,N-Dimethylformamide Solutions Studied by Neutron Diffraction with 6Li/7Li Isotopic Substitution Methods Reviewed

    Yasuo Kameda, Shu Saito, Aoi Saji, Yuko Amo, Takeshi Usuki, Hikari Watanabe, Nana Arai, Yasuhiro Umebayashi, Kenta Fujii, Kazuhide Ueno, Kazutaka Ikeda, Toshiya Otomo

    The Journal of Physical Chemistry B   124 ( 46 )   10456 - 10464   2020.11

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    Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society (ACS)  

    DOI: 10.1021/acs.jpcb.0c08021

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  • Effect of Brønsted Acidity on Ion Conduction in Fluorinated Acetic Acid and N-methylimidazole Equimolar Mixtures as pseudo-Protic Ionic Liquids

    Watanabe, Hikari, Arai, Nana, Kameda, Yasuo, Buchner, Richard, Umebayashi, Yasuhiro

    The Journal of Physical Chemistry   2020.11

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)  

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  • Transport Properties of Ionic Liquid and Sodium Salt Mixtures for Sodium-Ion Battery Electrolytes from Molecular Dynamics Simulation with a Self-Consistent Atomic Charge Determination Reviewed

    Lukman Hakim, Yoshiki Ishii, Kazuhiko Matsumoto, Rika Hagiwara, Koji Ohara, Yasuhiro Umebayashi, Nobuyuki Matubayasi

    The Journal of Physical Chemistry B   124 ( 33 )   7291 - 7305   2020.8

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    Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society (ACS)  

    DOI: 10.1021/acs.jpcb.0c04078

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  • Effects of Anion on Liquid Structures of Ionic Liquids at Graphene Electrode Interface Analyzed by Molecular Dynamics Simulations Reviewed

    Seiji Tsuzuki, Takenobu Nakamura, Tetsuya Morishita, Wataru Shinoda, Shiro Seki, Yasuhiro Umebayashi, Kazuhide Ueno, Kaoru Dokko, Masayoshi Watanabe

    Batteries & Supercaps   3 ( 7 )   658 - 667   2020.7

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/batt.201900197

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    Other Link: https://onlinelibrary.wiley.com/doi/full-xml/10.1002/batt.201900197

  • Speciation of Electrolyte Solutions for Next Generation Storage Batteries and Investigation of Their Ionic Conduction Mechanism Reviewed

    Yasuhiro UMEBAYASHI, Nana ARAI, Hikari WATANABE

    BUNSEKI KAGAKU   69 ( 6 )   271 - 278   2020.6

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    Authorship:Lead author   Publishing type:Research paper (scientific journal)   Publisher:Japan Society for Analytical Chemistry  

    DOI: 10.2116/bunsekikagaku.69.271

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  • Thermodynamic and structural aspects of solvated ionic liquids

    Yasuhiro UMEBAYASHI, Nana ARAI, Hikari WATANABE

    Denki Kagaku   88 ( 2 )   114 - 120   2020.6

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    Publishing type:Research paper (scientific journal)   Publisher:The Electrochemical Society of Japan  

    DOI: 10.5796/denkikagaku.20-fe0012

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  • Speciation Analysis and Thermodynamic Criteria of Solvated Ionic Liquids: Ionic Liquids or Superconcentrated Solutions? Reviewed

    Arai, Nana, Watanabe, Hikari, Nozaki, Erika, Seki, Shiro, Tsuzuki, Seiji, Ueno, Kazuhide, Dokko, Kaoru, Watanabe, Masayoshi, Kameda, Yasuo, Umebayashi, Yasuhiro

    Journal of Physical Chemistry Letters (2020)   11 ( 11 )   4517 - 4523   2020

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society (ACS)  

    DOI: 10.1021/acs.jpclett.0c00906

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  • Dynamic Chelate Effect on the Li+-Ion Conduction in Solvate Ionic Liquids Reviewed

    Nana Arai, Hikari Watanabe, Tsuyoshi Yamaguchi, Shiro Seki, Kazuhide Ueno, Kaoru Dokko, Masayoshi Watanabe, Yasuo Kameda, Richard Buchner, Yasuhiro Umebayashi

    The Journal of Physical Chemistry C   123 ( 50 )   30228 - 30233   2019.12

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    Publishing type:Research paper (scientific journal)   Publisher:American Chemical Society ({ACS})  

    DOI: 10.1021/acs.jpcc.9b10770

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  • Physicochemical compatibility of highly-concentrated solvate ionic liquids and a low-viscosity solvent Reviewed

    Takahashi Keitaro, Ishino Yuki, Murata Wataru, Umebayashi Yasuhiro, Tsuzuki Seiji, Watanabe Masayoshi, Takaba Hiromitsu, Seki Shiro

    RSC ADVANCES   9 ( 43 )   24922 - 24927   2019.8

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1039/c9ra04797b

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  • Possible proton conduction mechanism in pseudo-protic ionic liquids: A concept of specific proton conduction Reviewed

    Hikari Watanabe, Tatsuya Umecky, Nana Arai, Andreas Nazet, Toshiyuki Takamuku, Kenneth R. Harris, Yasuo Kameda, Richard Buchner, Yasuhiro Umebayashi

    Journal of Physical Chemistry B   123 ( 29 )   6244 - 6252   2019.7

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/acs.jpcb.9b03185

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  • Solvation Structure of Li+ in Methanol and 2-Propanol Solutions Studied by ATR-IR and Neutron Diffraction with Li-6/Li-7 Isotopic Substitution Methods Reviewed

    Kameda Yasuo, Sato Koichi, Hasebe Ryo, Amo Yuko, Usuki Takeshi, Umebayashi Yasuhiro, Ikeda Kazutaka, Otomo Toshiya

    JOURNAL OF PHYSICAL CHEMISTRY B   123 ( 23 )   4967 - 4975   2019.6

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1021/acs.jpcb.9b03477

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  • Effect of Electrolyte Composition on Performance and Stability of Lithium–Sulfur Batteries Reviewed

    Yuki Ishino, Keitaro Takahashi, Wataru Murata, Yasuhiro Umebayashi, Seiji Tsuzuki, Masayoshi Watanabe, Minori Kamaya, Shiro Seki

    Energy Technology   7 ( 12 )   2019.5

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    DOI: 10.1002/ente.201900197

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  • Origin of the Difference in Ion-Water Distances Determined by X-ray and Neutron Diffraction Measurements for Aqueous NaCl and KCl Solutions Reviewed

    Kameda Yasuo, Amo Yuko, Usuki Takeshi, Umebayashi Yasuhiro, Ikeda Kazutaka, Otomo Toshiya

    BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN   92 ( 4 )   754 - 767   2019.4

  • Mixture of monoglyme-based solvent and lithium Bis(trifluoromethanesulfonyl)amide as electrolyte for lithium ion battery using silicon electrode Reviewed

    Hisanori Ando, Toshikatsu Kojima, Nobuhiko Takeichi, Hikari Watanabe, Yasuhiro Umebayashi, Hiroshi Senoh

    Materials Chemistry and Physics   225   105 - 110   2019.3

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.matchemphys.2018.12.058

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  • Anion Coordination Characteristics of Ion-pair Complexes in Highly Concentrated Aqueous Lithium Bis(trifluoromethane-sulfonyl)amide Electrolytes Reviewed

    Tsurumura Tatsuya, Hashimoto Yasushi, Morita Masayuki, Umebayashi Yasuhiro, Fujii Kenta

    ANALYTICAL SCIENCES   35 ( 3 )   289 - 294   2019.3

  • Densities, Viscosities, and Refractive Indices of Binary Room-Temperature Ionic Liquids with Common Cations/Anions Reviewed

    Seki Shiro, Serizawa Nobuyuki, Ono Shimpei, Takei Katsuhito, Hayamizu Kikuko, Tsuzuki Seiji, Umebayashi Yasuhiro

    JOURNAL OF CHEMICAL AND ENGINEERING DATA   64 ( 2 )   433 - 441   2019.2

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    DOI: 10.1021/acs.jced.8b00334

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  • Direct Evidence for Li Ion Hopping Conduction in Highly Concentrated Sulfolane-Based Liquid Electrolytes Reviewed

    Kaoru Dokko, Daiki Watanabe, Yosuke Ugata, Morgan L. Thomas, Seiji Tsuzuki, Wataru Shinoda, Kei Hashimoto, Kazuhide Ueno, Yasuhiro Umebayashi, Masayoshi Watanabe

    The Journal of Physical Chemistry B   122 ( 47 )   10736 - 10745   2018.11

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    DOI: 10.1021/acs.jpcb.8b09439

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  • Neutron Diffraction Study on Partial Pair Correlation Functions of Water at Ambient Temperature Reviewed

    Kameda Yasuo, Amo Yuko, Usuki Takeshi, Umebayashi Yasuhiro, Ikeda Kazutaka, Otomo Toshiya

    BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN   91 ( 11 )   1586 - 1595   2018.11

  • Enhanced Electrochemical Stability of Molten Li Salt Hydrate Electrolytes by Addition of Divalent Cations Reviewed

    Shinji Kondou, Erika Nozaki, Shoshi Terada, Morgan L. Thomas, Kazuhide Ueno, Yasuhiro Umebayashi, Kaoru Dokko, Masayoshi Watanabe

    The Journal of Physical Chemistry C   122 ( 35 )   20167 - 20175   2018.9

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:AMER CHEMICAL SOC  

    DOI: 10.1021/acs.jpcc.8b06251

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  • Design and New Energy Application of Ionic Liquids Reviewed

    Shiro Seki, Shimpei Ono, Nobuyuki Serizawa, Yasuhiro Umebayashi, Seiji Tsuzuki, Kazuhide Ueno, Masayoshi Watanabe

    RSC Smart Materials   2018- ( 28 )   365 - 389   2018

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    Language:English   Publishing type:Part of collection (book)   Publisher:Royal Society of Chemistry  

    DOI: 10.1039/9781788011839-00365

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  • Density, viscosity, ionic conductivity, and self-diffusion coefficient of organic liquid electrolytes: Part I. Propylene carbonate + Li, Na, Mg and Ca cation salts Reviewed

    Shiro Seki, Kikuko Hayamizu, Seiji Tsuzuki, Keitaro Takahashi, Yuki Ishino, Masaki Kato, Erika Nozaki, Hikari Watanabe, Yasuhiro Umebayashi

    Journal of the Electrochemical Society   165 ( 3 )   A542 - A546   2018

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    Publishing type:Research paper (scientific journal)  

    DOI: 10.1149/2.0081803jes

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  • Local Structure of Li+ in Concentrated Ethylene Carbonate Solutions Studied by Low-Frequency Raman Scattering and Neutron Diffraction with Li-6/Li-7 Isotopic Substitution Methods Reviewed

    Shunya Maeda, Yasuo Kameda, Yuko Amo, Takeshi Usuki, Kazutaka Ikeda, Toshiya Otomo, Maho Yanagisawa, Shiro Seki, Nana Arai, Hikari Watanabe, Yasuhiro Umebayashi

    JOURNAL OF PHYSICAL CHEMISTRY B   121 ( 48 )   10979 - 10987   2017.12

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    DOI: 10.1021/acs.jpcb.7b10933

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  • Solvation state of sodium tetraphenylborate in 3-methylpyridine and its aqueous solutions Reviewed

    Koichiro Sadakane, Kenta Fujii, Seiji Tsuzuki, Hikari Watanabe, Yasuhiro Umebayashi

    JOURNAL OF MOLECULAR LIQUIDS   248   53 - 59   2017.12

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.molliq.2017.10.006

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  • Long-cycle-life Lithium-sulfur Batteries with Lithium Solvate Ionic Liquids Reviewed

    Shiro SEKI, Nobuyuki SERIZAWA, Katsuhito TAKEI, Yasuhiro UMEBAYASHI, Seiji TSUZUKI, Masayoshi WATANABE

    Electrochemistry   85 ( 10 )   680 - 682   2017.10

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:ELECTROCHEMICAL SOC JAPAN  

    DOI: 10.5796/electrochemistry.85.680

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  • Long-cycle-life Lithium-sulfur Batteries with Lithium Solvate Ionic Liquids Reviewed

    Shiro Seki, Nobuyuki Serizawa, Katsuhito Takei, Yasuhiro Umebayashi, Seiji Tsuzuki, Masayoshi Watanabe

    ELECTROCHEMISTRY   85 ( 10 )   680 - 682   2017.10

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    DOI: 10.5796/electrochemistry.85.680

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  • Effect of the cation on the stability of cation-glyme complexes and their interactions with the [TFSA](-) anion Reviewed

    Seiji Tsuzuki, Toshihiko Mandai, Soma Suzuki, Wataru Shinoda, Takenobu Nakamura, Tetsuya Morishita, Kazuhide Ueno, Shiro Seki, Yasuhiro Umebayashi, Kaoru Dokko, Masayoshi Watanabe

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   19 ( 28 )   18262 - 18272   2017.7

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    DOI: 10.1039/c7cp02779f

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  • Hydrogen bonding in protic and aprotic amide mixtures: Low-frequency Raman spectroscopy, small-angle neutron scattering, and molecular dynamics simulations Reviewed

    Kenta Fujii, Mari Yoshitake, Hikari Watanabe, Toshiyuki Takamuku, Yasuhiro Umebayashi

    JOURNAL OF MOLECULAR LIQUIDS   238   518 - 522   2017.7

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.molliq.2017.05.017

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  • Dissociation and Diffusion of Glyme-Sodium Bis(trifluoromethanesulfonyl)amide Complexes in Hydrofluoroether-Based Electrolytes for Sodium Batteries Reviewed

    Shoshi Terada, Hiroko Susa, Seiji Tsuzuki, Toshihiko Mandai, Kazuhide Ueno, Yasuhiro Umebayashi, Kaoru Dokko, Masayoshi Watanabe

    JOURNAL OF PHYSICAL CHEMISTRY C   120 ( 41 )   23339 - 23350   2016.10

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    DOI: 10.1021/acs.jpcc.6b06804

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  • Raman Spectroscopic Speciation Analyses and Liquid Structures by High-Energy X-ray Total Scattering and Molecular Dynamics Simulations for N-methylimidazolium-Based Protic Ionic Liquids Reviewed

    Hikari Watanabe, Hiroyuki Doi, Soshi Saito, Koichiro Sadakane, Kenta Fujii, Ryo Kanzaki, Yasuo Kameda, Yasuhiro Umebayashi

    BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN   89 ( 8 )   965 - 972   2016.8

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  • Li+ Local Structure in Li-Tetraglyme Solvate Ionic Liquid Revealed by Neutron Total Scattering Experiments with the Li-6/7 Isotopic Substitution Technique Reviewed

    Soshi Saito, Hikari Watanabe, Yutaka Hayashi, Masaru Matsugami, Seiji Tsuzuki, Shiro Seki, Jose N. Canongia Lopes, Rob Atkin, Kazuhide Ueno, Kaoru Dokko, Masayoshi Watanabe, Yasuo Kameda, Yasuhiro Umebayashi

    JOURNAL OF PHYSICAL CHEMISTRY LETTERS   7 ( 14 )   2832 - 2837   2016.7

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    DOI: 10.1021/acs.jpclett.6b01266

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  • Li+ Solvation and Ionic Transport in Lithium Solvate Ionic Liquids Diluted by Molecular Solvents Reviewed

    Kazuhide Ueno, Junichi Murai, Kohei Ikeda, Seiji Tsuzuki, Mizuho Tsuchiya, Ryoichi Tatara, Toshihiko Mandai, Yasuhiro Umebayashi, Kaoru Dokko, Masayoshi Watanabe

    JOURNAL OF PHYSICAL CHEMISTRY C   120 ( 29 )   15792 - 15802   2016.7

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  • A pH Scale for the Protic Ionic Liquid Ethylammonium Nitrate Reviewed

    Ryo Kanzaki, Hitoshi Kodamatani, Takashi Tomiyasu, Hikari Watanabe, Yasuhiro Umebayashi

    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   55 ( 21 )   6266 - 6269   2016.5

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    DOI: 10.1002/anie.201511328

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  • Local structure of Li+ in concentrated LiPF6-dimethyl carbonate solutions Reviewed

    Yasuo Kameda, Soshi Saito, Yasuhiro Umebayashi, Kenta Fujii, Yuko Amo, Takeshi Usuki

    JOURNAL OF MOLECULAR LIQUIDS   217   17 - 22   2016.5

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  • Hydrogen bond in imidazolium based protic and aprotic ionic liquids Reviewed

    Hikari Watanabe, Hiroyuki Doi, Soshi Saito, Masaru Matsugami, Kenta Fujii, Ryo Kanzaki, Yasuo Kameda, Yasuhiro Umebayashi

    JOURNAL OF MOLECULAR LIQUIDS   217   35 - 42   2016.5

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    DOI: 10.1016/j.molliq.2015.08.005

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  • Li+ Local Structure in Hydrofluoroether Diluted Li-Glyme Solvate Ionic Liquid Reviewed

    Soshi Saito, Hikari Watanabe, Kazuhide Ueno, Toshihiko Mandai, Shiro Seki, Seiji Tsuzuki, Yasuo Kameda, Kaoru Dokko, Masayoshi Watanabe, Yasuhiro Umebayashi

    JOURNAL OF PHYSICAL CHEMISTRY B   120 ( 13 )   3378 - 3387   2016.4

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    DOI: 10.1021/acs.jpcb.5b12354

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  • Effects of non-equimolar lithium salt glyme solvate ionic liquid on the control of interfacial degradation in lithium secondary batteries Reviewed

    Shiro Seki, Nobuyuki Serizawa, Katsuhito Takei, Seiji Tsuzuki, Yasuhiro Umebayashi, Yasushi Katayama, Takashi Miura, Kaoru Dokko, Masayoshi Watanabe

    RSC ADVANCES   6 ( 39 )   33043 - 33047   2016

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  • Microscopic Solvation Structure of Glucose in 1-Ethyl-3-methylimidazolium Methylphosphonate Ionic Liquid Reviewed

    Kazu Hirosawa, Kenta Fujii, Kei Hashimoto, Yasuhiro Umebayashi, Mitsuhiro Shibayama

    JOURNAL OF PHYSICAL CHEMISTRY B   119 ( 20 )   6262 - 6270   2015.5

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    DOI: 10.1021/acs.jpcb.5b00724

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  • Speciation Analysis for Next Generation Battery Electrolyte Solutions: Spectrothermodynamics - Lithium Ion Solvation in Ionic Liquids- Reviewed

    Yasuhiro Umebayashi, Kenta Fujii, Soshi Saito, Hikari Watanabe, Hiroyuki Doi

    BUNSEKI KAGAKU   64 ( 3 )   197 - 202   2015.3

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    DOI: 10.2116/bunsekikagaku.64.197

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  • Structural aspect on Li ion solvation in room-temperature ionic liquids Reviewed

    Kenta Fujii, Shiro Seki, Hiroyuki Doi, Yasuhiro Umebayashi

    Electrochemistry in Ionic Liquids: Volume 1: Fundamentals   317 - 332   2015.1

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    DOI: 10.1007/978-3-319-13485-7_10

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  • Energetic Contributions from the Cation and Anion to the Stability of Carbon Dioxide Dissolved in Imidazolium-Based Ionic Liquids Reviewed

    Ryosuke Ishizuka, Nobuyuki Matubayasi, Kai-Min Tu, Yasuhiro Umebayashi

    JOURNAL OF PHYSICAL CHEMISTRY B   119 ( 4 )   1579 - 1587   2015.1

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    DOI: 10.1021/jp5101957

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  • Structures of [Li(glyme)](+) complexes and their interactions with anions in equimolar mixtures of glymes and Li[TFSA]: analysis by molecular dynamics simulations Reviewed

    Seiji Tsuzuki, Wataru Shinoda, Masaru Matsugami, Yasuhiro Umebayashi, Kazuhide Ueno, Toshihiko Mandai, Shiro Seki, Kaoru Dokko, Masayoshi Watanabe

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   17 ( 1 )   126 - 129   2015

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    DOI: 10.1039/c4cp04718d

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  • Li+ solvation in glyme-Li salt solvate ionic liquids Reviewed

    Kazuhide Ueno, Ryoichi Tatara, Seiji Tsuzuki, Soshi Saito, Hiroyuki Doi, Kazuki Yoshida, Toshihiko Mandai, Masaru Matsugami, Yasuhiro Umebayashi, Kaoru Dokko, Masayoshi Watanabe

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   17 ( 12 )   8248 - 8257   2015

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    DOI: 10.1039/c4cp05943c

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  • Structural modification by adding Li cations into Mg/Cs-TFSA molten salt facilitating Mg electrodeposition Reviewed

    Koji Ohara, Yasuhiro Umebayashi, Tetsu Ichitsubo, Kazuhiko Matsumoto, Rika Hagiwara, Hajime Arai, Masahiro Mori, Yuki Orikasa, Shinya Okamoto, Masatsugu Oishi, Yuka Aiso, Toshiyuki Nohira, Yoshiharu Uchimoto, Zempachi Ogumi, Eiichiro Matsubara

    RSC ADVANCES   5 ( 4 )   3063 - 3069   2015

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    DOI: 10.1039/c4ra13244k

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  • Relationship between low-Q peak and long-range ordering of ionic liquids revealed by high-energy X-ray total scattering Reviewed

    Fujii Kenta, Kohara Shinji, Umebayashi Yasuhiro

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   17 ( 27 )   17838 - 17843   2015

  • Structural and aggregate analyses of (Li salt plus glyme) mixtures: the complex nature of solvate ionic liquids Reviewed

    Karina Shimizu, Adilson A. Freitas, Rob Atkin, Gregory G. Warr, Paul A. FitzGerald, Hiroyuki Doi, Soshi Saito, Kazuhide Ueno, Yasuhiro Umebayashi, Masayoshi Watanabe, Jose N. Canongia Lopes

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   17 ( 34 )   22321 - 22335   2015

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    DOI: 10.1039/c5cp03414k

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  • High-Energy X-ray Diffraction and MD Simulation Study on the Ion-Ion Interactions in 1-Ethyl-3-methylimidazolium Bis(fluorosulfonyl)amide Reviewed

    Kenta Fujii, Shiro Seki, Koji Ohara, Yasuo Kameda, Hiroyuki Doi, Soshi Saito, Yasuhiro Umebayashi

    JOURNAL OF SOLUTION CHEMISTRY   43 ( 9-10 )   1655 - 1668   2014.10

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    DOI: 10.1007/s10953-014-0234-8

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  • Editorial and Preface to the Proceedings of the 33rd International Conference on Solution Chemistry Reviewed

    Earle Waghorne, Ingmar Persson, Toshio Yamaguchi, Yasuo Kameda, Yasuhiro Umebayashi

    JOURNAL OF SOLUTION CHEMISTRY   43 ( 9-10 )   1477 - 1478   2014.10

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  • Conformation of ATP and ADP Molecules in Aqueous Solutions Determined by High-Energy X-ray Diffraction Reviewed

    Takuya Miyazaki, Yasuo Kameda, Yasuhiro Umebayashi, Hiroyuki Doi, Yuko Amo, Takeshi Usuki

    JOURNAL OF SOLUTION CHEMISTRY   43 ( 9-10 )   1487 - 1498   2014.10

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    DOI: 10.1007/s10953-014-0153-8

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  • Possibility of super Arrhenius ion conduction: Pseudo-protic ionic liquids Reviewed

    Yasuhiro Umebayashi, Hiroyuki Doi, Watanabe Hikari, Thomas Sonnleitner, Richard Buchner, Yuko Amo

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   248   2014.8

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  • Chelate Effects in Glyme/Lithium Bis(trifluoromethanesulfonyl)amide Solvate Ionic Liquids. I. Stability of Solvate Cations and Correlation with Electrolyte Properties Reviewed

    Ce Zhang, Kazuhide Ueno, Azusa Yamazaki, Kazuki Yoshida, Heejoon Moon, Toshihiko Mandai, Yasuhiro Umebayashi, Kaoru Dokko, Masayoshi Watanabe

    JOURNAL OF PHYSICAL CHEMISTRY B   118 ( 19 )   5144 - 5153   2014.5

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  • Static and Transport Properties of Alkyltrimethylammonium Cation-Based Room-Temperature Ionic Liquids Reviewed

    Shiro Seki, Seiji Tsuzuki, Kikuko Hayamizu, Nobuyuki Serizawa, Shimpei Ono, Katsuhito Takei, Hiroyuki Doi, Yasuhiro Umebayashi

    JOURNAL OF PHYSICAL CHEMISTRY B   118 ( 17 )   4590 - 4599   2014.5

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    DOI: 10.1021/jp500123q

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  • International Union of Pure and Applied Chemistry Papers based on presentations at the 33rd INTERNATIONAL CONFERENCE ON SOLUTION CHEMISTRY (ICSC-33) Held in Kyoto, Japan 7-12 July 2013 Preface Reviewed

    Yasuhiro Umebayashi, Yasuo Kameda

    PURE AND APPLIED CHEMISTRY   86 ( 2 )   85 - 85   2014.2

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  • Bronsted Basicity of Solute Butylamine in an Aprotic Ionic Liquid Investigated by Potentiometric Titration Reviewed

    Kenta Fujii, Kei Hashimoto, Takamasa Sakai, Yasuhiro Umebayashi, Mitsuhiro Shibayama

    CHEMISTRY LETTERS   42 ( 10 )   1250 - 1251   2013.10

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    DOI: 10.1246/cl.130537

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  • Unusual Li+ ion solvation structure in bis(fluorosulfonyl)amide based ionic liquid Reviewed

    Kenta Fujii, Hiroshi Hamano, Hiroyuki Doi, Xuedan Song, Seiji Tsuzuki, Kikuko Hayamizu, Shiro Seki, Yasuo Kameda, Kaoru Dokko, Masayoshi Watanabe, Yasuhiro Umebayashi

    Journal of Physical Chemistry C   117 ( 38 )   19314 - 19324   2013.9

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    DOI: 10.1021/jp4053264

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  • A New Proton Conductive Liquid with No Ions: Pseudo-Protic Ionic Liquids Reviewed

    Hiroyuki Doi, Xuedan Song, Babak Minofar, Ryo Kanzaki, Toshiyuki Takamuku, Yasuhiro Umebayashi

    CHEMISTRY-A EUROPEAN JOURNAL   19 ( 35 )   11522 - 11526   2013.8

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    DOI: 10.1002/chem.201302228

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  • Intermolecular interactions in Li+-glyme and Li +-glyme-TFSA- complexes: Relationship with physicochemical properties of [Li(glyme)][TFSA] ionic liquids Reviewed

    Seiji Tsuzuki, Wataru Shinoda, Shiro Seki, Yasuhiro Umebayashi, Kazuki Yoshida, Kaoru Dokko, Masayoshi Watanabe

    ChemPhysChem   14 ( 9 )   1993 - 2001   2013.6

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    DOI: 10.1002/cphc.201200843

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  • Communication: Collective dynamics of room-temperature ionic liquids and their Li ion solutions studied by high-resolution inelastic X-ray scattering Reviewed

    Kenta Fujii, Mitsuhiro Shibayama, Tsuyoshi Yamaguchi, Koji Yoshida, Toshio Yamaguchi, Shiro Seki, Hiroshi Uchiyama, Alfred Q. R. Baron, Yasuhiro Umebayashi

    Journal of Chemical Physics   138 ( 15 )   2013.4

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    DOI: 10.1063/1.4802768

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  • Solvation Structure of Poly(ethylene glycol) in Ionic Liquids Studied by High-energy X-ray Diffraction and Molecular Dynamics Simulations Reviewed

    Hanako Asai, Kenta Fujii, Kengo Nishi, Takamasa Sakai, Koji Ohara, Yasuhiro Umebayashi, Mitsuhiro Shibayama

    MACROMOLECULES   46 ( 6 )   2369 - 2375   2013.3

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    DOI: 10.1021/ma400218e

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  • Specific solvation of benzyl methacrylate in 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)amide ionic liquid Reviewed

    Masaru Matsugami, Kenta Fujii, Takeshi Ueki, Yuzo Kitazawa, Yasuhiro Umebayashi, Masayoshi Watanabe, Mitsuhiro Shibayama

    Analytical Sciences   29 ( 3 )   311 - 314   2013

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    DOI: 10.2116/analsci.29.311

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  • Acid-Base Property of N-Methylimidazolium-Based Protic Ionic Liquids Depending on Anion Reviewed

    Ryo Kanzaki, Hiroyuki Doi, Xuedan Song, Shota Hara, Shin-ichi Ishiguro, Yasuhiro Umebayashi

    JOURNAL OF PHYSICAL CHEMISTRY B   116 ( 48 )   14146 - 14152   2012.12

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    DOI: 10.1021/jp308477p

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  • Relationship between mesoscale dynamics and shear relaxation of ionic liquids with long alkyl chain Reviewed

    Tsuyoshi Yamaguchi, Ken-ichi Mikawa, Shinobu Koda, Kenta Fujii, Hitoshi Endo, Mitsuhoro Shibayama, Hiroshi Hamano, Yasuhiro Umebayashi

    JOURNAL OF CHEMICAL PHYSICS   137 ( 10 )   2012.9

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    DOI: 10.1063/1.4751547

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  • Surface Analysis of Ionic Liquids with and without Lithium Salt Using X-ray Photoelectron Spectroscopy Reviewed

    Tsutomu Kurisaki, Daisaku Tanaka, Yoshiki Inoue, Hisanobu Wakita, Babak Minofar, Shuhei Fukuda, Shin-ichi Ishiguro, Yasuhiro Umebayashi

    JOURNAL OF PHYSICAL CHEMISTRY B   116 ( 35 )   10870 - 10875   2012.9

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    DOI: 10.1021/jp301658k

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  • Multinuclear NMR Studies on Translational and Rotational Motion for Two Ionic Liquids Composed of BF4 Anion Reviewed

    Kikuko Hayamizu, Seiji Tsuzuki, Shiro Seki, Yasuhiro Umebayashi

    JOURNAL OF PHYSICAL CHEMISTRY B   116 ( 36 )   11284 - 11291   2012.9

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    DOI: 10.1021/jp306146s

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  • Comprehensive Refractive Index Property for Room-Temperature Ionic Liquids Reviewed

    Shiro Seki, Seiji Tsuzuki, Kikuko Hayamizu, Yasuhiro Umebayashi, Nobuyuki Serizawa, Katsuhito Takei, Hajime Miyashiro

    JOURNAL OF CHEMICAL AND ENGINEERING DATA   57 ( 8 )   2211 - 2216   2012.8

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    DOI: 10.1021/je201289w

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  • Free-Energy and Structural Analysis of Ion Solvation and Contact Ion-Pair Formation of Li+ with BF4- and PF6- in Water and Carbonate Solvents Reviewed

    Munetaka Takeuchi, Nobuyuki Matubayasi, Yasuo Kameda, Babak Minofar, Shin-ichi Ishiguro, Yasuhiro Umebayashi

    JOURNAL OF PHYSICAL CHEMISTRY B   116 ( 22 )   6476 - 6487   2012.6

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    DOI: 10.1021/jp3011487

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  • Effects of Lithium Salts on Shear Relaxation Spectra of Pyrrolidinium-Based Ionic Liquids Reviewed

    Tsuyoshi Yamaguchi, Ken-ichi Mikawa, Shinobu Koda, Nobuyuki Serizawa, Shiro Seki, Kenta Fujii, Yasuhiro Umebayashi

    JOURNAL OF PHYSICAL CHEMISTRY B   116 ( 24 )   7322 - 7327   2012.6

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    DOI: 10.1021/jp3032308

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  • Physicochemical and Acid-base Properties of a Series of 2-Hydroxyethylammonium-based Protic Ionic Liquids Reviewed

    Xuedan Song, Ryo Kanzaki, Shin-ichi Ishiguro, Yasuhiro Umebayashi

    ANALYTICAL SCIENCES   28 ( 5 )   469 - 474   2012.5

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    DOI: 10.2116/analsci.28.469

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  • Structural Heterogeneity and Unique Distorted Hydrogen Bonding in Primary Ammonium Nitrate Ionic Liquids Studied by High-Energy X-ray Diffraction Experiments and MD Simulations Reviewed

    Xuedan Song, Hiroshi Hamano, Babak Minofar, Ryo Kanzaki, Kenta Fujii, Yasuo Kameda, Shinji Kohara, Masayoshi Watanabe, Shin-ichi Ishiguro, Yasuhiro Umebayashi

    JOURNAL OF PHYSICAL CHEMISTRY B   116 ( 9 )   2801 - 2813   2012.3

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  • Physicochemical and Electrochemical Properties of 1-Ethyl-3-Methylimidazolium Tris(pentafluoroethyl)trifluorophosphate and 1-Ethyl-3-Methylimidazolium Tetracyanoborate Reviewed

    Shiro Seki, Nobuyuki Serizawa, Kikuko Hayamizu, Seiji Tsuzuki, Yasuhiro Umebayashi, Katsuhito Takei, Hajime Miyashiro

    JOURNAL OF THE ELECTROCHEMICAL SOCIETY   159 ( 7 )   A967 - A971   2012

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    DOI: 10.1149/2.032207jes

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  • Experimental evidences for molecular origin of low-Q peak in neutron/x-ray scattering of 1-alkyl-3-methylimidazolium bis(trifluoromethanesulfonyl) amide ionic liquids Reviewed

    Kenta Fujii, Ryo Kanzaki, Toshiyuki Takamuku, Yasuo Kameda, Shinji Kohara, Mitsuhiro Kanakubo, Mitsuhiro Shibayama, Shin-ichi Ishiguro, Yasuhiro Umebayashi

    JOURNAL OF CHEMICAL PHYSICS   135 ( 24 )   2011.12

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    DOI: 10.1063/1.3672097

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  • Liquid Structure of and Li+ Ion Solvation in Bis(trifluoromethanesulfonyl)amide Based Ionic Liquids Composed of 1-Ethyl-3-methylimidazolium and N-Methyl-N-propylpyrrolidinium Cations Reviewed

    Yasuhiro Umebayashi, Hiroshi Harnano, Shiro Seki, Babak Minofar, Kenta Fujii, Kikuko Hayamizu, Seiji Tsuzuki, Yasuo Kameda, Shinji Kohara, Masayoshi Watanabe

    JOURNAL OF PHYSICAL CHEMISTRY B   115 ( 42 )   12179 - 12191   2011.10

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    DOI: 10.1021/jp2072827

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  • Nuclear magnetic resonance studies on the rotational and translational motions of ionic liquids composed of 1-ethyl-3-methylimidazolium cation and bis(trifluoromethanesulfonyl)amide and bis(fluorosulfonyl)amide anions and their binary systems including lithium salts Reviewed

    Kikuko Hayamizu, Seiji Tsuzuki, Shiro Seki, Yasuhiro Umebayashi

    JOURNAL OF CHEMICAL PHYSICS   135 ( 8 )   2011.8

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    DOI: 10.1063/1.3625923

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  • Solvation Structure of Lithium Ion in Concentrated Dimethylcarbonate Solutions

    Y. Kameda, T. Miyazaki, Y. Umebayashi, S. Mori, H. Hamano, K. Fujii, Y. Amo, T. Usuki

    Activity Report on Neutron Scattering Research: Experimental Reports   18   1225 - 1225   2011.4

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  • Physicochemical Properties and Application of Ionic Liquids with N-P Bonds as Lithium Secondary Battery Electrolytes Reviewed

    Nobuyuki Serizawa, Shiro Seki, Seiji Tsuzuki, Kikuko Hayamizu, Yasuhiro Umebayashi, Katsuhito Takei, Hajime Miyashiro

    JOURNAL OF THE ELECTROCHEMICAL SOCIETY   158 ( 9 )   A1023 - A1030   2011

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    DOI: 10.1149/1.3613959

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  • Vibration spectroscopic study on room-temperature ionic liquids. Conformational isomerism and metal ion solvation

    Kenta Fujii, Shin-ichi Ishiguro, Yasuhiro Umebayashi

    Electrochemical Properties and Applications of Ionic Liquids   125 - 146   2011

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  • Studies on the translational and rotational motions of ionic liquids composed of N-methyl-N-propyl-pyrrolidinium (P-13) cation and bis(trifluoromethanesulfonyl)amide and bis(fluorosulfonyl)amide anions and their binary systems including lithium salts Reviewed

    Kikuko Hayamizu, Seiji Tsuzuki, Shiro Seki, Kenta Fujii, Masahiko Suenaga, Yasuhiro Umebayashi

    JOURNAL OF CHEMICAL PHYSICS   133 ( 19 )   2010.11

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    DOI: 10.1063/1.3505307

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  • Structure, solvation, and acid-base property in ionic liquids Reviewed

    Shin-ichi Ishiguro, Yasuhiro Umebayashi, Ryo Kanzaki, Kenta Fujii

    PURE AND APPLIED CHEMISTRY   82 ( 10 )   1927 - 1941   2010.10

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    DOI: 10.1351/PAC-CON-09-10-28

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  • Dependence of the Conformational Isomerism in 1-n-Butyl-3-methylimidazolium Ionic Liquids on the Nature of the Halide Anion Reviewed

    Yasuhiro Umebayashi, Hiroshi Hamano, Seiji Tsuzuki, Jose N. Canongia Lopes, Agilio A. H. Padua, Yasuo Kameda, Shinji Kohara, Taishi Yamaguchi, Kenta Fujii, Shin-ichi Ishiguro

    JOURNAL OF PHYSICAL CHEMISTRY B   114 ( 36 )   11715 - 11724   2010.9

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    DOI: 10.1021/jp1044755

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  • Electrolyte properties of 1-alkyl-2,3,5-trimethylpyrazolium cation-based room-temperature ionic liquids for lithium secondary batteries Reviewed

    Shiro Seki, Takeshi Kobayashi, Nobuyuki Serizawa, Yo Kobayashi, Katsuhito Takei, Hajime Miyashiro, Kikuko Hayamizu, Seiji Tsuzuki, Takushi Mitsugi, Yasuhiro Umebayashi, Masayoshi Watanabe

    JOURNAL OF POWER SOURCES   195 ( 18 )   6207 - 6211   2010.9

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    DOI: 10.1016/j.jpowsour.2009.10.081

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  • 非水溶液・イオン液体の酸塩基性とpH測定

    神崎 亮, 宋 雪旦, 石黒 慎一, 梅林 泰宏

    電気化学および工業物理化学 : denki kagaku   78 ( 8 )   687 - 692   2010.8

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  • Thermodynamic Study of the Solvation States of Acid and Base in a Protic Ionic Liquid, Ethylammonium Nitrate, and Its Aqueous Mixtures Reviewed

    Ryo Kanzaki, Xuedan Song, Yasuhiro Umebayashi, Shin-ichi Ishiguro

    CHEMISTRY LETTERS   39 ( 6 )   578 - 579   2010.6

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  • Raman Spectroscopic Studies and Ab Initio Calculations on Conformational Isomerism of 1-Butyl-3-methylimidazolium Bis-(trifluoromethanesulfonyl)amide Solvated to a Lithium Ion in Ionic Liquids: Effects of the Second Solvation Sphere of the Lithium Ion Reviewed

    Yasuhiro Umebayashi, Shuto Mori, Kenta Fujii, Seiji Tsuzuki, Shiro Seki, Kikuko Hayamizu, Shin-ichi Ishiguro

    JOURNAL OF PHYSICAL CHEMISTRY B   114 ( 19 )   6513 - 6521   2010.5

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  • Effects of cation and anion on physical properties of room-temperature ionic liquids Reviewed

    Shiro Seki, Takeshi Kobayashi, Yo Kobayashi, Katsuhito Takei, Hajime Miyashiro, Kikuko Hayamizu, Seiji Tsuzuki, Takushi Mitsugi, Yasuhiro Umebayashi

    JOURNAL OF MOLECULAR LIQUIDS   152 ( 1-3 )   9 - 13   2010.3

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  • Solvation and microscopic properties of ionic liquid/acetonitrile mixtures probed by high-pressure infrared spectroscopy Reviewed

    Yasuhiro Umebayashi, Jyh-Chiang Jiang, Kuan-Hung Lin, Yu-Lun Shan, Kenta Fujii, Shiro Seki, Shin-Ichi Ishiguro, Sheng Hsien Lin, Hai-Chou Chang

    JOURNAL OF CHEMICAL PHYSICS   131 ( 23 )   2009.12

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  • Ion-ion interactions of LiPF6 and LiBF4 in propylene carbonate solutions Reviewed

    Munetaka Takeuchi, Yasuo Kameda, Yasuhiro Umebayashi, Sari Ogawa, Takaaki Sonoda, Shin-ichi Ishiguro, Miho Fujita, Mitsuru Sano

    JOURNAL OF MOLECULAR LIQUIDS   148 ( 2-3 )   99 - 108   2009.9

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  • Ion-ion interaction in room temperature ionic liquid 1-ethyl-3-methylimidazolium tetrafluoroborate studied by large angle X-ray scattering experiment and molecular dynamics simulations Reviewed

    Ryo Kanzaki, Takushi Mitsugi, Shuhei Fukuda, Kenta Fujii, Munetaka Takeuchi, Yasufumi Soejima, Toshiyuki Takamuku, Toshio Yamaguchi, Yasuhiro Umebayashi, Shin-ichi Ishiguro

    JOURNAL OF MOLECULAR LIQUIDS   147 ( 1-2 )   77 - 82   2009.7

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  • Nano-scale aggregation structure formed in room temperature ionic liquid and its application to the new reaction field

    K. Fujii, T. Shimomura, T. Takamuku, Y. Umebayashi, S. Ishiguro

    Activity Report on Neutron Scattering Research: Experimental Reports   16   773 - 773   2009.4

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  • Raman Spectroscopic Study, DFT Calculations and MD Simulations on the Conformational Isomerism of N-Alkyl-N-methylpyrrolidinium Bis-(trifluoromethanesulfonyl) Amide Ionic Liquids Reviewed

    Yasuhiro Umebayashi, Takushi Mitsugi, Kenta Fujii, Shiro Seki, Kazumi Chiba, Hideo Yamamoto, Jose N. Canongia Lopes, Agilio A. H. Padua, Munetaka Takeuchi, Ryo Kanzaki, Shin-ichi Ishiguro

    JOURNAL OF PHYSICAL CHEMISTRY B   113 ( 13 )   4338 - 4346   2009.4

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  • Effect of Methylation at the C2 Position of Imidazolium on the Structure of Ionic Liquids Revealed by Large Angle X-ray Scattering Experiments and MD Simulations Reviewed

    Kenta Fujii, Takushi Mitsugi, Toshiyuki Takamuku, Toshio Yamaguchi, Yasuhiro Umebayashi, Shin-ich Ishiguro

    CHEMISTRY LETTERS   38 ( 4 )   340 - 341   2009.4

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    DOI: 10.1246/cl.2009.340

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  • Structural change of ionic association in ionic liquid/water mixtures: A high-pressure infrared spectroscopic study Reviewed

    Yasuhiro Umebayashi, Jyh-Chiang Jiang, Yu-Lun Shan, Kuan-Hung Lin, Kenta Fujii, Shiro Seki, Shin-Ichi Ishiguro, Sheng Hsien Lin, Hai-Chou Chang

    JOURNAL OF CHEMICAL PHYSICS   130 ( 12 )   2009.3

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  • Relationships between center atom species (N, P) and ionic conductivity, viscosity, density, self-diffusion coefficient of quaternary cation room-temperature ionic liquids Reviewed

    Shiro Seki, Kikuko Hayamizu, Seiji Tsuzuki, Kenta Fujii, Yasuhiro Umebayashi, Takushi Mitsugi, Takeshi Kobayashi, Yasutaka Ohno, Yo Kobayashi, Yuichi Mita, Hajime Miyashiro, Shin-ichi Ishiguro

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   11 ( 18 )   3509 - 3514   2009

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  • Liquid Structure and the Ion-Ion Interactions of Ethylammonium Nitrate Ionic Liquid Studied by Large Angle X-Ray Scattering and Molecular Dynamics Simulations Reviewed

    Yasuhiro Umebayashi, Wan-Lin Chung, Takushi Mitsugi, Shuhei Fukuda, Munetaka Takeuchi, Kenta Fujii, Toshiyuki Takamuku, Ryo Kanzaki, Shin-ichi Ishiguro

    Journal of Computer Chemistry, Japan   7 ( 4 )   125 - 134   2008.11

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  • Solvation Structures of Some Transition Metal(II) Ions in a Room-Temperature Ionic Liquid, 1-Ethyl-3-methylimidazolium Bis(trifluoromethanesulfonyl)amide Reviewed

    Kenta Fujii, Takahiro Nonaka, Yu Akimoto, Yasuhiro Umebayashi, Shin-ichi Ishiguro

    ANALYTICAL SCIENCES   24 ( 10 )   1377 - 1380   2008.10

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  • Solvation of Lithium Ion in N,N-Diethyl-N-methyl-N-(2-methoxyethyl)ammonium Bis(trifluoromethanesulfonyl)amide Using Raman and Multinuclear NMR Spectroscopy Reviewed

    Atsushi Shirai, Kenta Fuji, Shiro Seki, Yasuhiro Umebayashi, Shin-ichi Ishiguro, Yasuhisa Ikeda

    ANALYTICAL SCIENCES   24 ( 10 )   1291 - 1296   2008.10

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  • Raman Spectroscopic Study on Alkaline Metal Ion Solvation in 1-Butyl-3-methylimidazolium Bis(trifluoromethanesulfonyl)amide Ionic Liquid Reviewed

    Yasuhiro Umebayashi, Taishi Yamaguchi, Shuhei Fukuda, Takushi Mitsugi, Munetaka Takeuchi, Kenta Fujii, Shin-ichi Ishiguro

    ANALYTICAL SCIENCES   24 ( 10 )   1297 - 1304   2008.10

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  • Acidity and Basicity of Aqueous Mixtures of a Protic Ionic Liquid, Ethylammonium Nitrate Reviewed

    Ryo Kanzaki, Kuniaki Uchida, Xuedan Song, Yasuhiro Umebayashi, Shin-ichi Ishiguro

    ANALYTICAL SCIENCES   24 ( 10 )   1347 - 1349   2008.10

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  • Liquid structure and conformation of a low-viscosity ionic liquid, N-methyl-N-propyl-pyrrolidinium bis(fluorosulfonyl) imide studied by high-energy X-ray scattering Reviewed

    Kenta Fujii, Shiro Seki, Shuhei Fukuda, Toshiyuki Takamuku, Shinji Kohara, Yasuo Kameda, Yasuhiro Umebayashi, Shin-ichi Ishiguro

    JOURNAL OF MOLECULAR LIQUIDS   143 ( 1 )   64 - 69   2008.9

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  • Liquid structure of N-butyl-N-methylpyrrolidinium bis-(trifluoromethanesulfonyl) amide ionic liquid studied by large angle X-ray scattering and molecular dynamics simulations Reviewed

    Shuhei Fukuda, Munetaka Takeuchi, Kenta Fujii, Ryo Kanzaki, Toshiyuki Takamuku, Kazumi Chiba, Hideo Yamamoto, Yasuhiro Umebayashi, Shin-ichi Ishiguro

    JOURNAL OF MOLECULAR LIQUIDS   143 ( 1 )   2 - 7   2008.9

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  • I&EC 148-The potential energy landscape of bis(fluorosulfonyl)amide Reviewed

    Karina Shimizu, Yasuhiro Umebayashi, Kenta Fujii, Agilio A. H. Padua, Jose Nuno A. Canongia Lopes

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   236   2008.8

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  • Potential energy landscape of bis(fluorosulfonyl)amide Reviewed

    Jose N. Canongia Lopes, Karina Shimizu, Agilio A. H. Padua, Yasuhiro Umebayashi, Shuhei Fukuda, Kenta Fujii, Shin-ichi Ishiguro

    JOURNAL OF PHYSICAL CHEMISTRY B   112 ( 31 )   9449 - 9455   2008.8

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    DOI: 10.1021/jp803309c

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  • Alkyl-chain Dependence on Micro-phase Separation of Room Temperature Ionic Liquid

    K. Fujii, Y. Umebayashi, S. Ishiguro, T. Takamuku

    Activity Report on Neutron Scattering Research: Experimental Reports   2008.4

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  • Liquid structure of room-temperature ionic liquid, 1-ethyl-3-methylimidazolium bis-(trifluoromethanesulfonyl) imide Reviewed

    Kenta Fujii, Yasufumi Soejima, Yasuhiro Kyoshoin, Shuhei Fukuda, Ryo Kanzaki, Yasuhiro Umebayashi, Toshio Yamaguchi, Shin-ichi Ishiguro, Toshiyuki Takamuku

    JOURNAL OF PHYSICAL CHEMISTRY B   112 ( 14 )   4329 - 4336   2008.4

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  • A tale of two ions: The conformational landscapes of bis(trifluoromethanesulfonyl)amide and N,N-dialkylpyrrolidinium Reviewed

    Jose N. Canongia Lopes, Karina Shimizu, Agilio A. H. Padua, Yasuhiro Umebayashi, Shuhei Fukuda, Kenta Fujii, Shin-ichi Ishiguro

    JOURNAL OF PHYSICAL CHEMISTRY B   112 ( 5 )   1465 - 1472   2008.2

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    DOI: 10.1021/jp076997a

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  • Phase transition and conductive acceleration of phosphonium-cation-based room-temperature ionic liquid Reviewed

    Shiro Seki, Yasuhiro Umebayashi, Seiji Tsuzuki, Kikuko Hayamizu, Yo Kobayashi, Yasutaka Ohno, Takeshi Kobayashi, Yuichi Mita, Hajime Miyashiro, Nobuyuki Terada, Shin-ichi Ishiguro

    CHEMICAL COMMUNICATIONS   ( 43 )   5541 - 5543   2008

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  • Vibrational spectroscopy and molecular orbital calculations of N,N-dimethylacrylamide and N,N-dimethylpropionamide - Conformational equilibrium in the liquid state Reviewed

    Mitsunori Asada, Takushi Mitsugi, Kenta Fujii, Ryo Kanzaki, Yasuhiro Umebayashi, Shin-Ichi Ishiguro

    JOURNAL OF MOLECULAR LIQUIDS   136 ( 1-2 )   138 - 146   2007.11

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  • Lithium ion solvation in room-temperature ionic liquids involving bis(trifluoromethanesulfonyl) imide anion studied by Raman Spectroscopy and DFT calculations Reviewed

    Yasuhiro Umebayashi, Takushi Mitsugi, Shuhei Fukuda, Takao Fujimori, Kenta Fujii, Ryo Kanzaki, Munetaka Takeuchi, Shin-Ichi Ishiguro

    JOURNAL OF PHYSICAL CHEMISTRY B   111 ( 45 )   13028 - 13032   2007.11

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  • Anion Conformation of Low-Viscosity Room-Temperature Ionic Liquid 1-Ethyl-3-methylimidazolium Bis(fluorosulfonyl) Imide Reviewed

    Kenta Fujii, Shiro Seki, Shuhei Fukuda, Ryo Kanzaki, Toshiyuki Takamuku, Yasuhiro Umebayashi, Shin-ichi Ishiguro

    The Journal of Physical Chemistry B   111 ( 44 )   12829 - 12833   2007.10

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  • Raman spectroscopic study and DFT calculations on the conformation of 5-azonia-spiro[4.4]nonane cation in crystal and dimethyl carbonate solution Reviewed

    Tetsuya Sukizaki, Shuhei Fukuda, Taishi Yamaguchi, Kenta Fujii, Ryo Kanzaki, Kazumi Chiba, Hideo Yamamoto, Yasuhiro Umebayashi, Shin-ichi Ishiguro

    ELECTROCHEMISTRY   75 ( 8 )   628 - 634   2007.8

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    DOI: 10.5796/electrochemistry.75.628

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  • Solvation number and conformation of N,N-dimethylacrylamide and N,N-dimethylpropionamide in the coordination sphere of the cobalt(II) ion in solution studied by FT-IR and FT-Raman spectroscopy Reviewed

    Mitsunori Asada, Takushi Mitsugi, Takahiro Ogura, Kenta Fujii, Yasuhiro Umebayashi, Shin-ichi Ishiguro

    ANALYTICAL SCIENCES   23 ( 7 )   835 - 840   2007.7

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    DOI: 10.2116/analsci.23.835

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  • Solvation structure of Li+ in concentrated LiPF6-propylene carbonate solutions Reviewed

    Yasuo Kameda, Yasuhiro Umebayashi, Munetaka Takeuchi, Mohanmmad Abdul Wahab, Shuhei Fukuda, Shin-ichi Ishiguro, Motoya Sasaki, Yuko Amo, Takeshi Usuki

    JOURNAL OF PHYSICAL CHEMISTRY B   111 ( 22 )   6104 - 6109   2007.6

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  • Acid-base property of ethylammonium nitrate ionic liquid directly obtained using ion-selective field effect transistor electrode Reviewed

    Ryo Kanzaki, Kumaki Uchida, Shota Hara, Yasuhiro Umebayashi, Shin-ichi Ishiguro, Satoshi Nomura

    CHEMISTRY LETTERS   36 ( 5 )   684 - 685   2007.5

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    DOI: 10.1246/cl.2007.684

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  • Liquid structure of room temperature ionic liquids studied by X-ray and molecular dynamics simulations Invited Reviewed

    Molten salts   50 ( 3 )   117 - 125   2007.4

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  • 分子シミュレーションおよびX線回折法によるイオン液体の構造とダイナミクス

    神崎 亮, 梅林泰宏, 竹内宗孝, 藤井健太

    アンサンブル   9 ( 3 )   18 - 21   2007.4

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  • Solvation structure of magnesium, zinc, and alkaline earth metal ions in N,N-dimethylformamide, N,N-dimethylacetamide, and their mixtures studied by means of Raman spectroscopy and DFT calculations - Ionic size and electronic effects on steric congestion Reviewed

    Mitsunori Asada, Takao Fujimori, Kenta Fujii, Ryo Kanzaki, Yasuhiro Umebayashi, Shin-ichi Ishiguro

    JOURNAL OF RAMAN SPECTROSCOPY   38 ( 4 )   417 - 426   2007.4

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  • Conformational structure of room temperature ionic liquid N-butyl-N-methyl-pyrrolidinium bis(trifluoromethanesulfonyl) imide - Raman spectroscopic study and DFT calculations Reviewed

    Takao Fujimori, Kenta Fujii, Ryo Kanzaki, Kazumi Chiba, Hideo Yamamoto, Yasuhiro Umebayashi, Shin-ichi Ishiguro

    JOURNAL OF MOLECULAR LIQUIDS   131   216 - 224   2007.3

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  • 分光実験とMD法による溶液の液体構造とダイナミクス

    藤井 健太, 神埼 亮, 梅林 泰宏, 石黒 慎一

    九州大学情報基盤センター広報 : 全国共同利用版   6 ( 3 )   172 - 173   2007.3

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    DOI: 10.15017/1467684

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  • Binuclear mu-perchlorato complexes of alkaline earth metal ions studied by electrospray ionization mass spectrometry and DFT calculations Reviewed

    Ryo Kanzaki, Yasuhiro Umebayashi, Mitsunori Asada, Shin-ichi Ishiguro, Taisuke Matsumoto, Akihiro Wakisaka

    CHEMISTRY LETTERS   35 ( 10 )   1118 - 1119   2006.10

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  • Hysteresis loops in dielectric properties of the thermochromic copper(II) compounds Reviewed

    Shinya Hayami, Natsuko Motokawa, Aya Shuto, Naoji Masuhara, Yasuhiro Umebayashi, Yonezo Maeda, Osamu Sato, Katsuya Inoue, Ryo Kawajiri, Yui Kumura, Takashi Okubo, Tadaoki Mitani

    CHEMISTRY LETTERS   35 ( 10 )   1114 - 1115   2006.10

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  • Cobalt(II) chloro complexation in N-methylformamide-N, N-dimethylformamide mixtures : Titration calorimetry and spectrophotometry Reviewed

    K. Fujii, Y. Matsumoto, Y. Kaieda, D. Kobayashi, Y. Umebayashi, S. Ishiguro

    Journal of Thermal Analysis and Calorimetry   85   567 - 573   2006.8

  • Solvent conformation and ion solvation: From molecular to ionic liquids Reviewed

    Shin-ichi Ishiguro, Yasuhiro Umebayashi, Kenta Fujii, Ryo Kanzaki

    PURE AND APPLIED CHEMISTRY   78 ( 8 )   1595 - 1609   2006.8

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    DOI: 10.1351/pac200678081595

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  • Raman spectroscopic study on the Room Temperature Ionic Liquids and their metal ion solvation

    Y. Umebayashi, T. Fujimori, K. Fujii, R. Kanazaki, S. Ishiguro

    Jasoco Report   2006.4

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  • DFT計算およびMDシミュレーションによるイオン液体中の金属イオン溶媒和

    梅林 泰宏, 藤森 崇夫, 藤井健太, 神崎 亮, 石黒 慎一

    九州大学情報基盤センター広報   2006.4

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  • Conformational equilibrium of bis(trifluoromethanesulfonyl) imide anion of a room-temperature ionic liquid: Raman spectroscopic study and DFT calculations Reviewed

    Kenta Fujii, Takao Fujimori, Toshiyuki Takamuku, Ryo Kanzaki, Yasuhiro Umebayashi, Shin-Ichi Ishiguro

    Journal of Physical Chemistry B   110   8179 - 8183   2006.4

  • Liquid structure and preferential solvation of metal ions in solvent mixtures of N,N-dimethylformamide and N-methylformamide Reviewed

    Kenta Fujii, Takashi Kumai, Toshiyuki Takamuku, Yasuhiro Umebayashi, Shin-Ichi Ishiguro

    Journal of Physical Chemistry A   110   1798 - 1804   2006.1

  • Solvation structure and complexation of the manganese(II) ion in N,N-dimethylpropionamide and N,N,N′,N′-tetramethylurea studied by means of titration calorimetry and Raman spectroscopy Reviewed

    Yue Zhang, Natsumi Watanabe, Yuuko Miyawaki, Yutaka Mune, Kenta Fujii, Yasuhiro Umebayashi, Shin-Ichi Ishiguro

    Journal of Solution Chemistry   34   1429 - 1443   2005.12

  • Evidence of conformational equilibrium of 1-ethyl-3-methylimidazolium in its ionic liquid salts: Raman spectroscopic study and quantum chemical calculations Reviewed

    Yasuhiro Umebayashi, Takao Fujimori, Tetsuya Sukizaki, Mitsunori Asada, Kenta Fujii, Ryo Kanzaki, Shin-Ichi Ishiguro

    Journal of Physical Chemistry A   109   8976 - 8982   2005.9

  • Thermodynamic aspects of metal-ion complexation in the structured solvent, N-methylformamide Reviewed

    Kenta Fujii, Yasuhiro Umebayashi, Ryo Kanzaki, Daisuke Kobayashi, Ryoko Matsuura, Shin-Ichi Ishiguro

    Journal of Solution Chemistry   34   739 - 753   2005.7

  • Kinetic solvation steric effect at the transition state of reaction between trichlorocobaltate(II) and chloride ions in N,N-dimethylformamide and dimethyl sulfoxide Reviewed

    Yasuhiro Umebayashi, Nobuyuki Shigeta, Yue Zhang, Morito Komiya, Yu-Ichi Murakami, Shin-Ichi Ishiguro

    Journal of Molecular Liquids   119 ( 1-3 )   177 - 182   2005.5

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  • Solvation and halogeno complexation of the manganese(II) ion in N-methyl-2-pyrolidone Reviewed

    Yue Zhang, Natsumi Watanabe, Yasuhiro Umebayashi, Shin-Ichi Ishiguro

    Journal of Molecular Liquids   119 ( 1-3 )   167 - 170   2005.5

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    DOI: 10.1016/j.molliq.2004.10.028

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  • Conformation of solvent N,N-dimethylpropionamide in the coordination sphere of the Zinc(II) ion studied by Raman spectroscopy and DFT calculations Reviewed

    Yasuhiro Umebayashi, Babara Mroz, Mitsunori Asada, Kenta Fujii, Kai Matsumoto, Yutaka Mune, Michael Probst, Shin-Ichi Ishiguro

    Journal of Physical Chemistry A   109   4862 - 4868   2005.5

  • Raman spectroscopic study on the enthalpy of conformational change of N,N-dimethylpropionamide bound to calcium ion Reviewed

    Yasuhiro Umebayashi, Yutaka Mune, Taiga Tsukamoto, Yue Zhang, Shin-Chi Ishiguro

    Journal of Molecular Liquids   118 ( 1-3 )   45 - 49   2005.4

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  • Calorimetric study on complexation of copper(II) ion with some amide solvents in acetonitrile Reviewed

    Kenta Fujii, Toshihiko Endoh, Masatoki Yokoi, Yasuhiro Umebayashi, Shin-Ichi Ishiguro

    Thermochimica Acta   431   29 - 32   2005.2

  • Thermodynamics and fluorescence spectra of 1,10-phenanthroline in micelles of poly (ethylene oxide)-type nonionic surfactant Reviewed

    R Kanzaki, Y Umebayashi, T Maki, S Ishiguro

    JOURNAL OF SOLUTION CHEMISTRY   33 ( 6-7 )   699 - 709   2004.6

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  • Hysteretic behavior on the heat of protonation of diethylenetriamine in aqueous solution Reviewed

    Tei Maki, Ryo Kanzaki, Yasuhiro Umebayashi, Shin-Ichi Ishiguro

    Chemistry Letters   33 ( 2 )   186 - 187   2004.2

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    DOI: 10.1246/cl.2004.186

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  • Conformational equilibria of solvent N,N-dimethylpropionamide in the bulk and in the coordination sphere of the manganese(II) ion Reviewed

    Yasuhiro Umebayashi, Kai Matsumoto, Yutaka Mune, Yue Zhang, Shin-Ichi Ishiguro

    Physical Chemistry Chemical Physics   5 ( 12 )   2552 - 2556   2003.6

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    DOI: 10.1039/b302143b

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  • Raman spectroscopic study on the solvation steric effect of the manganese(II) ion in solvent mixtures of N,N-dimethylformamide and 1,1,3,3-tetramethylurea Reviewed

    Y. Umebayashi, K. Matsumoto, M. Watanabe, S. Ishiguro

    Journal of Molecular Liquids   103-104   331 - 337   2003.3

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    DOI: 10.1016/S0167-7322(02)00151-4

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  • Formation thermodynamics of binary and ternary lanthanide(III) complexes with 1,10-phenanthroline and chloride in N,N-dimethylformamide Reviewed

    Morito Komiya, Yuuki Nishikido, Yasuhiro Umebayashi, Shin-Ichi Ishiguro

    Journal of Solution Chemistry   31 ( 11 )   931 - 946   2002

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    DOI: 10.1023/A:1021471907261

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  • Thermodynamic and structural aspects on the solvation steric effect of lanthanide(III) - Dependence on the ionic size Reviewed

    S. Ishiguro, Y. Umebayashi, M. Komiya

    Coordination Chemistry Reviews   226 ( 1-2 )   103 - 111   2002

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    DOI: 10.1016/S0010-8545(01)00448-9

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  • Solvation structure of lanthanide(III) ions in solvent mixtures of N,N-dimethylformamide and N,N-dimethylacetamide studied by titration Raman spectroscopy Reviewed

    Yasuhiro Umebayashi, Kai Matsumoto, Isamu Mekata, Shin-Ichi Ishiguro

    Physical Chemistry Chemical Physics   4 ( 22 )   5599 - 5605   2002

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    DOI: 10.1039/b204162f

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  • Thermodynamics of [Co(NCS)4]2- at poly(ethylene oxide) and octylphenyl moieties in micelles of nonionic surfactants Reviewed

    Yasuhiro Umebayashi, Mari Shin, Ryo Kanzaki, Shin-Ichi Ishiguro

    Journal of Colloid and Interface Science   237 ( 2 )   167 - 173   2001.5

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    DOI: 10.1006/jcis.2001.7457

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  • Distribution thermodynamics of 1,10-phenanthroline in non-ionic surfactant Triton X-100 micelles Reviewed

    R Kanzaki, Y Umebayashi, K Uemura, S Ishiguro

    PHYSICAL CHEMISTRY CHEMICAL PHYSICS   3 ( 5 )   824 - 828   2001

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  • Individual solvation number of first-row transition metal(II) ions in solvent mixtures of N,N-dimethylformamide and N,N-dimethylacetamide - Solvation steric effect Reviewed

    Yasuhiro Umebayashi, Kai Matsumoto, Manabu Watanabe, Shin-Ichi Ishiguro

    Physical Chemistry Chemical Physics   3 ( 24 )   5475 - 5481   2001

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    DOI: 10.1039/b107342g

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  • Individual solvation numbers around the nickel(II) ion in an N,N-dimethylformamide and N,N-dimethylacetamide mixture determined by Raman spectrophotometry Reviewed

    Y. Umebayashi, K. Matsumoto, M. Watanabe, K. Katoh, S. I. Ishiguro

    Analytical Sciences   17 ( 2 )   323 - 326   2001

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    DOI: 10.2116/analsci.17.323

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  • Influence of charge on adduct formation of [M(phen)3](z+) (M = Ru2+, Co3+, Si4+) with 1,10-phenanthroline in aqueous solution Reviewed

    R. Kanzaki, T. Egashira, T. Nakazato, Y. Umebayashi, S. I. Ishiguro

    Physical Chemistry Chemical Physics   2 ( 17 )   3825 - 3830   2000

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    DOI: 10.1039/b003854g

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  • Thermodynamics and structure of chloro-complexes of aluminium(III) in N,N-dimethylformamide and N,N-dimethylacetamide Reviewed

    Yasuhiro Umebayashi, Morito Komiya, Yuzuru Nagahama, Hiroshi Kobayashi, Shin-Ichi Ishiguro

    Journal of the Chemical Society - Faraday Transactions   94 ( 5 )   647 - 651   1998.3

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Royal Society of Chemistry  

    DOI: 10.1039/a707898f

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  • Strong and weak solvation steric effects on lanthanoid(III) ions in N,N-dimethylformamide-N,N-dimethylacetamide mixtures Reviewed

    Shin-Ichi Ishiguro, Yasuhiro Umebayashi, Kazusuke Kato, Ryota Takahashi, Kazuhiko Ozutsumi

    Journal of the Chemical Society - Faraday Transactions   94 ( 24 )   3607 - 3612   1998

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    DOI: 10.1039/a806967k

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  • Thiocyanato and iodo complexation of Cadmium(II) ions in micellar solutions of a nonionic surfactant triton x-100 Reviewed

    Yasuhiro Umebayashi, Mari Shin, Shin-ichi Ishiguro

    Journal of Colloid and Interface Science   191 ( 2 )   391 - 397   1997.7

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Academic Press Inc.  

    DOI: 10.1006/jcis.1997.4937

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  • Unusual behaviour of thiocyanato complexation with copper(II) and zinc(II) ions in micellar solutions of a non-ionic surfactant Triton X-100 Reviewed

    Yasuhiro Umebayashi, Yuzuru Nagahama, Shin-Ichi Ishiguro

    Journal of the Chemical Society - Faraday Transactions   93 ( 7 )   1377 - 1381   1997.4

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    DOI: 10.1039/a607341g

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  • Distribution thermodynamics of metal complexes in micelles of nonionic surfactants

    Mari Shin, Yasuhiro Umebayashi, Shin-Ichi Ishiguro

    Analytical Sciences   13   115 - 118   1997

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    DOI: 10.2116/analsci.13.supplement_115

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  • Spectrophotometric study of thiocyanato complexation of cobalt(II) and nickel(II) ions in micellar solutions of a nonionic surfactant Triton X-100 Reviewed

    Yasuhiro Umebayashi, Shin-Ichi Ishiguro

    Journal of Solution Chemistry   25 ( 8 )   731 - 746   1996

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Kluwer Academic/Plenum Publishers  

    DOI: 10.1007/BF00973781

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Books

  • 化学便覧 11章『化学平衡』共同編集, 11.6「非水系の平衡定数」,11.8「気相平衡」, 11.9「溶媒の諸物性」執筆,化学便覧 基礎編 改訂6版, 公益社団法人 日本化学会 編

    梅林 泰宏

    丸善出版  2021.1  ( ISBN:9784621305218

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    Total pages:xviii, 1509p   Language:Japanese

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  • 溶媒和イオン液体形成の熱力学と構造, 電気化学, 88, 2, 114-120, 2020

    梅林 泰宏, 荒井 奈々, 渡辺 日香里

    公益社団法人 電気化学会  2020.6 

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  • Speciation of electrolyte solutions for next generation storage batteries and investigation of their ionic conduction mechanism, Bunseki Kagaku, 69(6), P.271-278

    Umebayashi, Yasuhiro, Arai, Nana, Watanabe, Hikari

    2020.6 

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  • Metal Ion Complexation in Surfactant Solutions (re-published)

    Mari Shin, Shin-ichi Ishiguro, Ryo Kanzaki, Yasuhiro Umebayashi

    Encyclopedia of Surface and Colloid Science, 3rd Ed., Taylor & Francis, New York,, 6, 4177-4187.  2016 

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  • イオン液体研究最前線と社会実装

    梅林 泰宏( Role: Contributor ,  24. 第3章 イオン液体の液体構造)

    シーエムシー出版, 渡邉 正義 監修  2016 

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  • X線・中性子を用いた電解質溶液の構造解析

    梅林 泰宏

    Electrochemistry,, 81, 986-990  2013 

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  • 次世代蓄電・発電デバイス電解液のスペシエーション分析:分光熱力学─イオン液体中のリチウムイオン溶媒和

    梅林 泰宏, 藤井 健太, 斎藤 蒼思, 渡辺 日香里, 土井 寛之

    分析化学,, 64, 197-202.  2013 

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  • 錯体化学会選書 錯体の溶液化学

    梅林 泰宏( Role: Contributor ,  19. 2-4 非水溶媒・混合溶媒中の金属イオンの溶媒和構造, 6-2 熱力学測定, 6-4 計算化学によるアプローチ, 9-2-4 イオン液体と錯体化学)

    三京出版, 横山 晴彦・田端 正明 編著  2012 

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  • イオン液体の科学 新世代液体への挑戦

    梅林 泰宏( Role: Contributor ,  20. 1 構造と物性:イオン液体とは何か?1.3 静的構造)

    丸善, 西川 恵子・大内 幸雄・伊藤 敏幸・大野 弘幸・渡邉 正義編集  2012 

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  • Vibration Spectroscopic study on Room-Temperature Ionic Liquids. – Conformational Isomerism and Metal Ion Solvation –

    Kenta Fujii, Shim-ichi Ishiguro, Yasuhiro Umebayashi

    Electrochemical Properties and Applications of Ionic Liquid, Nova Science Publishers, Inc., 125-145.  2011 

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  • Structure, Solvation and Acid-Base Property in Ionic Liquids

    Shin-ichi Ishiguro, Yasuhiro Umebayashi, Ryo Kanzaki, Kenta Fujii

    Pure Appl. Chem., 82, 1927-1941.  2010 

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  • 電気化学便覧

    梅林 泰宏, 山口 毅( Role: Contributor ,  4-1 電解質溶液)

    丸善 電気化学会編 第4章 「電解質溶液」 桑畑進編  2010 

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  • 非水溶液・イオン液体の酸塩基性とpH測定

    神崎 亮, 宋 雪旦, 石黒 慎一, 梅林 泰宏

    電気化学会誌,, 78, 687-692  2010 

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  • 熱力学的測定法による非イオン性界面活性剤ミセル内部の構造の推定

    神崎 亮, 梅林 泰宏, 石黒 慎一

    熱測定, 35, 10-18  2008 

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  • Liquid Structure of Room Temperature Ionic Liquids revealed by High-energy X-Ray Diffraction and Molecular Dynamics Simulations

    Yasuhiro Umebayashi, Shuhei Fukuda, Yasuo Kameda, Shinji Kohara

    SPring-8 Research Frontiers, 118-119  2007 

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  • 広角X線散乱実験および分子動力学計算によるイオン液体の液体構造

    梅林 泰宏, 福田 周平, 竹内 宗孝, 神崎 亮, 石黒 慎一, 藤井 健太, 高椋 利幸

    溶融塩および高温化学, 50, 117-125【依頼あり】  2007 

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  • 分子シミュレーションおよびX線回折法によるイオン液体の構造とダイナミクス

    神崎 亮, 梅林 泰宏, 竹内 宗孝, 藤井 健太

    アンサンブル, 39, 18-21  2007 

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  • Solvent Conformation and Ion Solvation – form Molecular to Ionic Liquid –

    Shin-ichi Ishiguro, Yasuhiro Umebayashi, Kenta Fujii, Ryo Kanzaki

    Pure Appl. Chem. 78, 1595-1609  2006 

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  • Raman分光からみたイオン液体とその金属イオン溶媒和

    梅林 泰宏, 藤森 崇夫, 藤井 健太, 神崎 亮, 石黒 慎一

    Jasco Report, 48, 1-10  2006 

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  • 改訂5版 化学便覧

    梅林 泰宏( Role: Contributor ,  6. 11.6 非水溶液 11.6.1 ヒドロキソ錯体 11.6.3 金属錯体 11.9 溶液の諸物性)

    丸善  2004 

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  • Characterization of Metal Ions in Coordinating Solvent Mixtures by Means of Raman Spectroscopy

    Shin-ichi Ishiguro, Yasuhiro Umebayashi, Ryo Kanzaki

    Anal. Sci., 20, 415-421  2004 

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  • Thermodynamic approach to micelles as a microscopic reaction media.

    Yasuhiro Umebayashi, Mari Shin, Ryo Kanzaki, Shin-Ichi Ishiguro

    Current Topics in Colloid & Interface Science, 5, 1-18  2002 

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  • Thermodynamic and structural aspects on the solvation steric effect of lanthanide(III) -Dependence on the ionic size -

    Shinichi Ishiguro, Yasuhiro Umebayashi, Morito Komiya

    Coord. Chem. Rev., 226, 103-111  2002 

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  • Metal-Ion complexation in surfactant solutions.

    Yasuhiro Umebayashi, Mari Shin, Ryo Kanzaki, Shin-Ichi Ishiguro

    Encyclopedia of Surface and Colloid Science, Marcel Dekker, Inc., New York, 3302-3313.  2002 

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  • 精密滴定カロリメトリーによる疎水性クラスターの生成熱力学

    梅林 泰宏, 神崎 亮, 石黒 慎一

    表面, 37, 596-609  1999 

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  • Solvation structure of lanthanide(III) ions in N,N-dimethylformamide - N,N-dimethylacetamide mixtures.

    Kazusuke Kato, Yasuhiro Umebayashi, Sshin-ichi Ishiguro

    希土類, 28, 234-235  1996 

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MISC

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Presentations

  • Charge/discharge reaction paths of positive electrode insoluble Lithium-Sulfur batteries

    Yui KAWANA, Nana ARAI, Hikari WATANABE, Jihae HAN, Kei NISHIKAWA, Shiro SEKI, Seiji TSUZUKI, Kazuhide UENO, Kaoru DOKKO, Masayoshi WATANABE, Yasuhiro UMEBAYASHI

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    Event date: 2021.12

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  • Salvation Structure of aluminium ions in Glyme-Based Electrolytes

    Jihae HAN, Mako YUGE, Yui KAWANA, Keata FUJII, Atsushi KITADA, Kuniaki MURASE, Yasuhiro UMEBAYASHI

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    Event date: 2021.12

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  • スルホラン系超濃厚リチウム塩溶液に関するイオン伝導機構

    弓削眞子, 荒井奈々, 佐久間有紀, 都築誠二, 渡邉正義, 上野和英, 獨古薫, 渡辺日香里, 韓智海, 梅林泰宏

    第62回電池討論会 

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    Event date: 2021.11 - 2021.12

    Presentation type:Oral presentation (general)  

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  • Study on Al3+ーCl- Complexation in Non-aqueous Solvents by means of Raman Spectroscopy and Molecular Orbital Calculations

    永島結, 川名結衣, 弓削眞子, 藤井健太, 北田敦, 邑瀬邦明, 韓智海, 梅林泰宏

    第11回イオン液体討論会 オンライン開催 

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    Event date: 2021.11

    Presentation type:Oral presentation (general)  

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  • 溶液化学の視点に基づく次世代の蓄電デバイス・金属電析に関する電解質開発

    韓智海, 藤井健太, 永島結, 渡辺日香里, 梅林泰宏

    関東支部新潟地区部会 第34回研究発表会 Web開催  2021.11 

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  • 正極不溶型リチウムー硫黄電池の正極活物質のオペランド顕微Raman分光と単粒子電気化学測定

    川名結衣, 荒井奈々, 西川慶, 関志朗, 都築誠二, 上野和英, 獨古薫, 渡邉正義, 渡辺日香里, 韓智海, 梅林泰宏

    第43回溶液化学シンポジウム Web開催 

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    Event date: 2021.10

    Presentation type:Poster presentation  

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  • グライム系アルミニウム電解液中におけるAl3+ーCl-錯体生成反応に関する分子軌道計算および振動分光測定

    韓智海, 永島結, 川名結衣, 弓削眞子, 藤井健太, 北田敦, 邑瀬邦明, 梅林泰宏

    第43回溶液化学シンポジウム Web開催 

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    Event date: 2021.10

    Presentation type:Poster presentation  

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  • スルホラン系超濃厚リチウム塩溶液の双極子再配向ダイナミクスとスペシエーション

    弓削眞子, 荒井奈々, 佐久間有紀, 都築誠二, 渡邉正義, 上野和英, 獨古薫, 渡辺日香里, 韓智海, 梅林泰宏

    第43回溶液化学シンポジウム Web開催 

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    Event date: 2021.10

    Presentation type:Oral presentation (general)  

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  • 正極不溶型リチウム-硫黄電池正極材料の単粒子電気化学測定

    川名結衣, 荒井奈々, 渡辺日香里, 韓智海, 西川慶, 関志朗, 都築誠二, 上野和英, 獨古薫, 渡邉正義, 梅林泰宏

    第70回分析化学会年会、オンライン 

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    Event date: 2021.9

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  • スルホラン系溶媒和溶融リチウム塩の双極子再配向ダイナミクスとLi+スペシエーション

    弓削眞子, 荒井奈々, 佐久間有紀, 都築誠二, 上野和英, 渡邉正義, 獨古薫, 渡辺日香里, 韓智海, 梅林泰宏

    日本分析化学会 第70年会 オンライン開催 

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    Event date: 2021.9

    Presentation type:Oral presentation (general)  

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  • 超濃厚リチウム塩プロピレンカーボネート溶液の誘電緩和分光と振動分光

    佐久間有紀, 弓削眞子, 川名結衣, 関志朗, 上野和英, 獨古薫, 渡邉正義, 渡辺日香里, 韓智海, 梅林泰宏

    第70回分析化学会年会、オンライン 

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    Event date: 2021.9

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  • 種々の非水溶媒中におけるAl3+-Cl-錯体生成反応に関する振動分光測定及び分子軌道計算

    永島結, 川名結衣, 弓削眞子, 藤井健太, 北田敦, 邑瀬邦明, 韓智海, 梅林泰宏

    第70回分析化学会年会、オンライン 

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    Event date: 2021.9

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  • グライム系電解液中の溶媒和アルミニウムイオンの構造とクロロ錯体生成反応

    韓 智海, 永島 結, 川名結衣, 弓削眞子, 藤井健太, 北田 敦, 邑瀬邦明, 梅林泰宏

    2021年電気化学秋季大会, 北海道大学オンライン  2021.9 

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  • 正極不溶型リチウム-硫黄電池の正極活物質の反応経路 ―溶媒依存性―

    川名結衣, 荒井奈々, 渡辺日香里, 韓 智海, 西川 慶, 関 志朗, 都築誠二, 上野和英, 獨古 薫, 渡邉正義, 梅林泰宏

    2021年電気化学秋季大会, 北海道大学オンライン  2021.9 

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  • スルホラン系溶媒和LiBF4溶融塩中のLi+溶存構造とイオン伝導機構

    弓削眞子, 荒井奈々, 都築誠二, 上野和英, 渡邉正義, 獨古薫, 亀田恭男, 渡辺日香里, 韓智海, 梅林泰宏

    2021年電気化学秋季大会, 北海道大学オンライン 

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    Event date: 2021.9

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  • 正極不溶型リチウム-硫黄電池の正極活物質の反応経路

    川名結衣, 荒井奈々, 渡辺日香里, 韓 智海, 西川 慶, 関 志朗, 都築誠二, 上野和英, 獨古 薫, 渡邉正義, 梅林泰宏

    第81回分析化学討論会, オンライン 

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    Event date: 2021.5

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  • グライム系電解液中のアルミニウムイオンの溶媒和構造:分子軌道計算によるアプローチ

    韓 智海, 弓削眞子, 川名結衣, 藤井健太, 北田 敦, 邑瀬邦明, 梅林泰宏

    第81回分析化学討論会, オンライン 

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    Event date: 2021.5

    Presentation type:Oral presentation (general)  

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  • スルホラン系正極不溶型電解液を⽤いたリチウム-硫⻩電池の充放電中のインピーダンススペクトル解析

    渡辺 日香里, 上野 和英, 弓削 眞子, 川名 結衣, 獨古 薫, 渡邉 正義, 板垣昌幸, 梅林 泰宏

    電気化学会第88回大会(オンライン討論会)  2021.3 

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    Event date: 2021.3

    Presentation type:Oral presentation (general)  

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  • リチウム-硫黄電池正極/正極不溶型電解液界面近傍における異常なイオン濃縮

    梅林泰宏, 荒井奈々, 渡辺日香里, 川名結衣, 西川 慶, 関 志朗, 上野和英, 獨古 薫, 渡邉正義

    電気化学会第88回大会, オンライン 

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    Event date: 2021.3

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  • 正極不溶型リチウム-硫黄電池のオペランド顕微Raman分光:電解質依存性

    梅林 泰宏, 荒井 奈々, 渡辺 日香里, 弓削 眞子, 川名 結衣, 上野 和英, 関 志朗, 獨古 薫, 都築 誠二, 渡邉 正義

    第61回電池討論会  2020.11 

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    Event date: 2020.11

    Language:Japanese  

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  • 正極不溶型リチウムー硫黄電池スルホラン系及びグライム系電解液のオペランド顕微Raman分光測定

    梅林 泰宏, 荒井 奈々, 弓削 眞子, 川名 結衣, 渡辺 日香里, 都築 誠二, 関 志朗, 上野 和英, 獨古 薫, 渡邉 正義

    日本分析化学会第69年会  2020.9 

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    Event date: 2020.9

    Language:Japanese  

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  • オペランドインピーダンス法による正極不溶型リチウム-硫黄電池の放電反応に関する研究

    渡辺 日香里, 上野 和英, 弓削 眞子, 川名 結衣, 板垣 昌幸, 獨古 薫, 渡邉 正義, 梅林 泰宏

    日本分析化学会第69年会  2020.9 

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    Event date: 2020.9

    Language:Japanese  

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  • 正極不溶型リチウムー硫黄電池の正極/電解液界面近傍の異常なイオン分布:電解液依存性

    梅林泰宏, 荒井奈々, 渡辺日香里, 弓削眞子, 都築誠二, 上野和英, 渡邉正義, 獨古薫

    第87回電気化学会大会 名古屋工業大学 

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    Event date: 2020.3

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  • Raman分光相補的最小自乗解析によるスルホラン溶媒和溶融リチウム塩のスペシエーション分析

    弓削眞子, 荒井奈々, 渡辺日香里, 都築誠二, 上野和英, 渡邉正義, 獨古薫, 亀田恭男, 梅林泰宏

    第87回電気化学会大会 名古屋工業大学 

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    Event date: 2020.3

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  • Raman分光の相補的最小自乗解析および6/7Li同位体置換中性子全散乱によるLiBF4スルホラン溶媒和溶融塩のスペシエーション分析とLi+局所構造解析

    荒井奈々, 弓削眞子, 渡辺日香里, 都築誠二, 上野和英, 渡邉正義, 獨古薫, 亀田恭男, 梅林泰宏

    第10回イオン液体討論会 大阪大学豊中キャンパス 

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    Event date: 2019.11

    Presentation type:Oral presentation (general)  

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  • 正極不溶型スルホラン溶媒和溶融リチウム塩電解液を用いたリチウムー硫黄電池のオペランド顕微Raman分光

    荒井奈々, 渡辺日香里, 弓削眞子, 都築誠二, 上野和英, 渡邉正義, 獨古薫, 梅林泰宏

    第10回イオン液体討論会 大阪大学豊中キャンパス 

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    Event date: 2019.11

    Presentation type:Poster presentation  

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  • オペランドRaman分光・インピーダン測定によるスルホラン系電解液を用いる正極不溶型リチウムー硫黄電池の研究

    梅林泰宏, 渡辺日香里, 荒井奈々, 弓削眞子, 都築誠二, 関志朗, 上野和英, 獨古薫, 渡邉正義

    第60回電池討論会 国立京都国際会館 

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    Event date: 2019.11

    Presentation type:Poster presentation  

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  • Ramanスペクトル相補的最小自乗解析によるLiBF4スルホラン溶媒和溶融塩中のLi+溶存構造

    弓削眞子, 荒井奈々, 渡辺日香里, 都築誠二, 上野和英, 渡邉正義, 獨古薫, 亀田恭男, 梅林泰宏

    第42回溶液化学シンポジウム 東北大学片平さくらホール 

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    Event date: 2019.10 - 2019.11

    Presentation type:Poster presentation  

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  • 正極不溶型リチウム-硫黄電池の正極/電解液界面近傍の異常な陰イオン濃縮

    荒井奈々, 渡辺日香里, 弓削眞子, 都築誠二, 上野和英, 渡邉正義, 獨古薫, 梅林泰宏

    第42回溶液化学シンポジウム 東北大学片平さくらホール 

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    Event date: 2019.10 - 2019.11

    Presentation type:Oral presentation (general)  

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  • オペランド顕微Raman測定による正極不溶型リチウムー硫黄電池の充放電反応に関する研究

    荒井奈々, 渡辺日香里, 弓削眞子, 都築誠二, 上野和英, 渡邉正義, 獨古薫, 梅林泰宏

    第42回溶液化学シンポジウム 東北大学片平さくらホール 

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    Event date: 2019.10 - 2019.11

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  • スルホラン系溶媒和LiBF4溶融塩のRamanスペクトル相補的最小自乗法によるスペシエーション分析

    弓削眞子, 荒井奈々, 渡辺日香里, 都築誠二, 上野和英, 渡邉正義, 獨古薫, 亀田恭男, 梅林泰宏

    日本分析化学会第68年会 千葉大学西千葉キャンパス 

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    Event date: 2019.9

    Presentation type:Poster presentation  

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  • スルホラン系電解液を用いた正極不溶性リチウムー硫黄電池のオペランドRaman測定

    荒井奈々, 渡辺日香里, 弓削眞子, 都築誠二, 上野和英, 渡邉正義, 獨古薫, 梅林泰宏

    日本分析化学会第68年会 千葉大学西千葉キャンパス 

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    Event date: 2019.9

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  • スルホラン系溶媒和LiBF4溶融塩の分子軌道計算及びRamanスペクトルのスペシエーション解析

    弓削眞子, 荒井奈々, 渡辺日香里, 都築誠二, 上野和英, 渡邉正義, 獨古薫, 亀田恭男, 梅林泰宏

    第33回新潟地区部会研究発表会 新潟大学五十嵐キャンパス  2019.9 

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  • Ionic conduction and speciation analysis of protic solvate ionic liquid : Fe((CF3SO2)2N)3 hydrate melt

    Hikari Watanabe, Nana Arai, Erika Nozaki, Yasuo Kameda, Yasuhiro Umebayashi

    Joint Conference of EMLG/JMLG Meeting 2018 and 41st Symposium on Solution Chemistry of Japan  2018.11 

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  • S8 local structure in CS2 solution revealed by neutron total scattering experiments with 32S/34S isotropic subsititution technique

    Nana Arai, Yasuo Kemeda, Hikari Watanabe, Erika Nozaki, Seiji Tsuzuki, Yasuhiro Umebayashi

    Joint Conference of EMLG/JMLG Meeting 2018 and 41st Symposium on Solution Chemistry of Japan  2018.11 

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  • Li+ local structure and liquid structure in super-concentrated Li salt aqueous solutions revealed by scattering techniques

    Erika NOZAKI, Hikari WATANABE, Kazuhide UENO, Kenta FUJII, Nana ARAI, Shiro SEKI, Kaoru DOKKO, Masayoshi WATANABE, Yasuo KAMEDA, Yasuhiro UMEBAYASHI

    Joint Conference of EMLG/JMLG Meeting 2018 and 41st Symposium on Solution Chemistry of Japan  2018.11 

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  • High energy X-ray scattering studies on nano-segregated liquid structure of pseudo protic ionic liquids

    UMEBAYASHI YasuhiroHikari Watanabe, Nana Arai, Erika Nozaki, Yasuo Kameda, Yasuhiro Umebayashi

    Joint Conference of EMLG/JMLG Meeting 2018 and 41st Symposium on Solution Chemistry of Japan  2018.11 

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  • The Li+ local structure and liquid structure of various Li-glyme solvate ionic liquids

    Nana Arai, Hikari Watanabe, Shiro Seki, Seiji Tsuzuki, Erika Nozaki, Kazuhide Ueno, Kaoru Dokko, Masayoshi Watanabe, Yasuo Kameda, Yasuhiro Umebayashi

    Joint Conference of EMLG/JMLG Meeting 2018 and 41st Symposium on Solution Chemistry of Japan  2018.11 

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  • Thermodynamics and species distributions of various Li-glyme solvate ionic liquids

    Nana Arai, Hikari Watanabe, Shiro Seki, Seiji Tsuzuki, Erika Nozaki, Kazuhide Ueno, Kaoru Dokko, Masayoshi Watanabe, Yasuo Kameda, Yasuhiro Umebayashi

    The 6th Asian-Pacific Conference on Ionic Liquids & Green Processes  2018.10 

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  • Effects of heterogeneous structure on specific proton conduction in pseudo-protic ionic liquids

    Hikari Watanabe, Nana Arai, Erika Nozaki, Yasuo Kameda, Yasuhiro Umebayashi

    The 6th Asian-Pacific Conference on Ionic Liquids & Green Processes  2018.10 

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  • Speciation analysis and Li+ conduction mechanism in “Water-in-salt”

    Erika NOZAKI, Hikari WATANABE, Nana ARAI, Kazuhide UENO, Kaoru DOKKO, Masayoshi WATANABE, Yasuhiro UMEBAYASHI

    The 6th Asian-Pacific Conference on Ionic Liquids & Green Processes  2018.10 

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  • Li+ conduction mechanism in super-concentrated lithium salt aqueous solutions as electrolyte for aqueous lithium batteries

    Erika NOZAKI, Hikari WATANABE, Kazuhide UENO, Kenta FUJII, Nana ARAI, Shiro SEKI, Kaoru DOKKO, Masayoshi WATANABE, Yasuo KAMEDA, Yasuhiro UMEBAYASHI

    The 6th International meeting on ionic liquids for Electrochemical Devices  2018.9 

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  • Speciation analysis and thermodynamics of various lithium-glyme solvate ionic liquids

    Nana Arai, Hikari Watanabe, Shiro Seki, Seiji Tsuzuki, Erika Nozaki, Kazuhide Ueno, Kaoru Dokko, Masayoshi Watanabe, Yasuo Kameda, Yasuhiro Umebayashi

    The 6th International meeting on ionic liquids for Electrochemical Devices  2018.9 

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  • Thermodynamics and speciation analysis of non-equimolar Lithium - Glymes solvate ionic liquids as the electrolyte for the lithium-sulfur battery

    Nana Arai, Hikari Watanabe, Shiro Seki, Seiji Tsuzuki, Erika Nozaki, Kazuhide Ueno, Kaoru Dokko, Masayoshi Watanabe, Yasuo Kameda, Yasuhiro Umebayashi

    69th Annual Meeting of International Society of Electrochemistry  2018.9 

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  • Transport Properties and Liquid Structure of the Super-Concentrated Lithium Salt Aqueous Solutions

    Erika NOZAKI, Hikari WATANABE, Kazuhide UENO, Kenta FUJII, Nana ARAI, Shiro SEKI, Kaoru DOKKO, Masayoshi WATANABE, Yasuo KAMEDA, Yasuhiro UMEBAYASHI

    69th Annual Meeting of International Society of Electrochemistry  2018.9 

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  • Specific Proton Conduction for N-Alkylimidazole and Calboxylic acid Equimolar Mixture as pseudo-Protic Ionic Liquids

    Hikari Watanabe, Tatsuya Umecky, Toshiyuki Takamuku, Yasuo Kameda, Yasuhiro Umebayashi

    69th Annual Meeting of International Society of Electrochemistry  2018.9 

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  • Anomalous Li+ transportation and Liquid Structure of the Super-Concentrated Lithium Salt Solutions

    Yasuhiro UMEBAYASH, Erika NOZAKI, Hikari WATANABE, Nana ARAI, Kazuhide UENO, Kenta FUJII, Shiro SEKI, Kaoru DOKKO, Masayoshi WATANABE, Yasuo KAMEDA

    35th International Conference on Solution Chemistry  2018.8 

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  • Thermodynamics and structure of the super-concentrated lithium salt aqueous solutions; ‘Water-in-Salt’

    Erika NOZAKI, Hikari WATANABE, Kazuhide UENO, Kenta FUJII, Nana ARAI, Shiro SEKI, Kaoru DOKKO, Masayoshi WATANABE, Yasuo KAMEDA, Yasuhiro UMEBAYASHI

    35th International Conference on Solution Chemistry  2018.8 

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  • Thermodynamics, structure and dynamics of lithium-glymes solvate ionic liquids

    Nana Arai, Hikari Watanabe, Thomas Sonnleitner, Andreas Nazet, Tsuyoshi Yamaguchi, Kazuhide Ueno, Kaoru Dokko, Masayoshi Watanabe, Yasuo Kameda, Richard Buchner, Yasuhiro Umebayashi

    35th International Conference on Solution Chemistry  2018.8 

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  • Imidazole and acetic acid equimolar mixture as a pseudo-protic ionic liquids; toward new proton conductors

    Hikari Watanabe, Tatsuya Umecky, Richard Buchner, Toshiyuki Takamuku, Yasuo Kameda, Yasuhiro Umebayashi

    35th International Conference on Solution Chemistry  2018.8 

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  • Ionic conduction and the nano-segregated liquid structures of pseudo-protic ionic liquids

    Hikari Watanabe, Nana Arai, Erika Nozaki, Yasuo Kameda, Yasuhiro Umebayashi

    35th International Conference on Solution Chemistry  2018.8 

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  • 【招待】溶液化学からみた溶媒和イオン液体・濃厚電解液の課題と魅力 Invited

    梅林 泰宏

    日本化学会電気化学デォヴォジョン化学電池材料研究会第39回講演会  2016.12 

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  • 【招待】プロトン性イオン液体の液体構造とプロトニクス Invited

    梅林 泰宏

    第48 回溶融塩化学討論会  2016.11 

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  • 【依頼】リチウム-硫黄電池電解液の スペシエーション分析とイオン伝導機構 Invited

    梅林 泰宏

    株式会社技術情報協会セミナー リチウム硫黄電池における正極の作製技術と劣化対策  2016.4 

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  • High energy X-ray scattering studies on liquid structure of pseudo-Protic Ionic Liquid N-methylimidazole and actic acid equimolar mixture with the aids of MD simulations

    Hiroyuki Doi, Hikari Watanabe, Thomas Sonnleitner, Andreas Nazet, Soshi Saito, Kenta Fujii, Tatsuya Umecky, Toshiyuki Takamuku, Yasuo Kameda, Richard Buchner, Yasuhiro Umebayashi

    EMLG 2015  2015.9 

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  • Possibility of Super Arrhenius proton Conduction in pseudo-Protic Ionic Liquids: imidazole and acetic acid equimolar mixture

    Yasuhiro Umebayashi, Hikari Watanabe, Tatsuya Umecky, Hiroyuki Doi, Soshi Saito, Kenta Fujii, Toshiyuki Takamuku, Yasuo Kameda

    EMLG 2015  2015.9 

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  • 【Keynote Lecture】Lithium Ion Solvation in Room-temperature Ionic Liquids toward Next Generation Batteries Based on Spectrothermodynamics. Invited International conference

    Yasuhiro Umebayashi, Kenta Fujii, Hiroyuki Doi, Soshi Saito, Hikari Watanabe, Shiro Seki, Seiji Tsuzuki, Yasuo Kameda

    34th International Conference on Solution Chemistry  2015.8 

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  • Concentration Dependence of Physicochemical Properties in Diglyme-Lithium Bis(trifluoromethanesulfonyl)amide Solutions

    M. Kanakubo, T. Sonnleitner, R. Buchner, D. Kodama, T. Makino, H. Doi, Y. Umebayashi, M. Watanabe

    34th International Conference on Solution Chemistry  2015.8 

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  • Possibility of specific proton conduction in N-methylimidazole-acetic acid equimolar mixture

    Hiroyuki Doi, Xuedan Song, Kenta Fujii, Ryo Kanzaki, Takuya Miyazaki, Yasuo Kameda, Yasuhiro Umebayashi

    34th International Conference on Solution Chemistry  2015.8 

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  • Specific lithium ion stability and conduction in the Li-Glymes complex solvates ionic liquids

    Yasuhiro Umebayashi, Soshi Saito, Hiroyuki Doi, Hikari Watanabe, Kazuhide Ueno, Seiji Tsuzuki, Shiro Seki, Kaoru Dokko, Masayoshi Watanabe

    6th Congress on Ionic Liquids  2015.6 

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  • 【招待】分光熱力学に基づく次世代リチウム-硫黄電池電解液のスペシエーション分析 Invited

    梅林 泰宏

    日本化学会第95春季年会(2015) 【T1C】資源・次世代エネルギーと環境->リチウム硫黄二次電池への挑戦  2015.3 

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  • 【依頼】次世代蓄電・発電デバイス電解液のスペシエーション分析 ―分光熱力学― Invited

    梅林 泰宏

    京都大学 元素戦略拠点  2014.11 

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  • 【依頼】イオン液体中のイオン溶媒和の一般性と特異性 Invited

    梅林 泰宏

    資源・素材2014  2014.9 

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  • Dielectric Relaxation spectroscopic speciation analysis of N-methylimidazole equimolar mixture with acetic acid

    Hiroyuki Doi, Thomas Sonnleitner, Hikari Watanabe, Soshi Saito, Richard Buchner, Yasuhiro Umebayashi

    RSC Tokyo International Conference, JASIS Conference  2014.9 

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  • Raman and NMR spectroscopic speciation analysis of proton carrier in imidazole and acetic acid equimolar mixture as pseudo-protic ionic liquids of new proton conductors

    Hikari Watanabe, Tatsuya Umecky, Hiroyuki Doi, Soshi Soito, Ryo Kanzaki, Toshiyuki Takamuku, Yasuhiro Umebayashi

    RSC Tokyo International Conference, JASIS Conference  2014.9 

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  • Speciation and structure analysis of Li+ in the Li – glyme solvate ionic liquids as new electrolytes for next generation lithium batteries

    Soshi Saito, Hiroyuki Doi, Hikari Watanabe, Seiji Tsuzuki, Shiro Seki, Kaoru Dokko, Masayoshi Watanabe, Yasuhiro Umebayashi

    RSC Tokyo International Conference, JASIS Conference  2014.9 

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  • 【Invited Lecture】Possibility of Super-Arrhenius Ion Conduction : pseudo-Protic Ionic Liquids. Invited International conference

    Yasuhiro Umebayashi, Hiroyuki Doi, Hikari Watanabe, Thomas Sonnleither, Richard Buchner, Yuko Amou

    248th American Chemical Society National Meeting & Exposition  2014.8 

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  • Static And Transport Properties Of Ionic Liquids And Their Binary Mixtures

    Shiro Seki, Nobuyuki Serizawa, Katsuhito Takei, Kikuko Hayamizu, Seiji Tsuzuki, Yasuhiro Umebayashi

    EUCHEM2014  2014.7 

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  • Dynamics Of Protic And Pseudo-Protic Ionic Liquids

    Thomas Sonnleitner, Hiroyuki Doi, Yasuhiro Umebayashi, Andreas Nazet, Richard Buchner

    EUCHEM2014  2014.7 

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  • 【招待】イオン液体で拓く新たな電解質溶液論 Invited

    梅林 泰宏

    新潟大学 コアステーション グリーンケミストリー 第4回研究シンポジウム  2014.3 

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  • 【依頼】よくわかる!イオン液体の基礎科学と活かし方 ~溶媒・溶液・溶解:非水溶媒とイオン液体の考え方~ Invited

    梅林 泰宏

    サイエンス&テクノロジー セミナー  2014.2 

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  • 【依頼】MD支援X線散乱実験によるイオン液体の液体構造解析 Invited

    梅林 泰宏

    富士通計算化学セミナー  2013.7 

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  • 【Invited Lecture】Structure and Dynamics of Pseudo-Protic Ionic Liquids as Novel Proton Conductors Invited International conference

    Hiroyuki Doi, Xuedan Song, Kenta Fujii, Ryo Kanzaki, Takuya Miyazaki, Yasuo Kameda, Yasuhiro Umebayashi

    33rd International Conference on Solution Chemistry, Post-symposium on Ionic Liquids From Science to Green Chemical Applications,  2013.7 

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  • Li+ ion speciation in Li-glymes ionic liquids toward rechargeable batteries

    Soshi Saito, Hiroyuki Doi, Toshihiko Mandai, Kazuhide Ueno, Seiji Tsuzuki, Wataru Shinoda, Shiro Seki, Kaoru Dokko, Masayoshi Watanabe, Yasuhiro Umebayashi

    33rd International Conference on Solution Chemistry, Post-symposium on Ionic Liquids From Science to Green Chemical Applications  2013.7 

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  • Structure and Free Energy Analyses of CO2 Solvation in Room-temperature Ionic Liquids

    Yasuhiro Umebayashi, Hiroyuki Doi, Mitsuhiro Kanakubo, Takashi Makino, Kenta Fujii, Yasuo Kameda, Nobuyuki Matubayasi

    33rd International Conference on Solution Chemistry  2013.7 

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  • Liquid and Li+ Local Structures in Li-glymes Complex Ionic Liquids Revealed by Raman and X-ray Scattering Techniques with the Aid of Theoretical Calculations

    Soshi Saito, Hiroyuki Doi, Seiji Tsuzuki, Wataru Shinoda, Shiro Seki, Kaoru Dokko, Masayoshi Watanabe, Yasuhiro Umebayashi

    33rd International Conference on Solution Chemistry  2013.7 

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  • Possibility of specific proton conduction in N-methylimidazole-acetic acid equimolar mixture.

    Hiroyuki Doi, Xuedan Song, Kenta. Fujii, Ryo Kanzaki, Takuya Miyazaki, Yasuo Kameda, Yasuhiro Umebayashi

    33rd International Conference on Solution Chemistry  2013.7 

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  • Conformation of ATP and ADP Molecules in Aqueous Solutions Determined by High-energy X-ray Diffraction

    T. Miyazaki, Y. Kameda, Y. Umebayashi, H. Doi, Y. Amo, T. Usuki

    33rd International Conference on Solution Chemistry  2013.7 

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  • Closest ion-ion interaction and structural heterogeneity of 1-alkylimidazolium based protic ionic liquids

    Yasuhiro Umebayashi, Hiroshi Hamano, Hiroyuki Doi, Xuedan Song, Ryo Kanzaki, Kenta Fujii, Yasuo Kameda

    5th Congress on Ionic Liquids  2013.4 

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  • Physicohemical properties of binary room-temperature ionic liquids.

    Shiro Seki, Nobuyuki Serizawa, Katsuhito Takei, Seiji Tsuzuki, Kikuko Hayamizu, Yasuhiro Umebayashi

    5th Congress on Ionic Liquids  2013.4 

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  • 【Keynote Lecture】Structural heterogeneity in aprotic and protic ionic liquids. Invited International conference

    UMEBAYASHI Yasuhiro

    6th International Symposium on Molecular Thermodynamics and Molecular Simulation  2012.9 

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  • 【招待】イオン溶媒和 -非水溶媒・イオン液体がもたらしたもの- Invited

    梅林 泰宏

    日本分析化学会第61年会 溶液界面研究懇談会  2012.9 

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  • 【招待】イオン液体の可能性 -溶液化学的視点から- Invited

    梅林 泰宏

    第17回九州溶液化学懇談会  2012.3 

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  • 【招待】イオン液体を用いるリチウム電池電解液の構造と集団的ダイナミクス Invited

    梅林 泰宏

    第 79 回 新電池構想部会  2011.11 

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  • 【Keynote Lecture】Structure and dynamics of a lithium ion in ionic liquids: toward high safety batteries. Invited International conference

    UMEBAYASHI Yasuhiro

    32nd International Conference on Solution Chemistry  2011.9 

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  • Reaction Thermodynamics for Ionization of Acetic Acid in Protic Ionic Liquid, Ethylammonium Nitrate

    UMEBAYASHI YasuhiroRyo Kanzaki, Xuedan Song, Yasuhiro Umebayashi, Shin-Ichi Ishiguro

    32nd International Conference on Solution Chemistry  2011.8 

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  • Structural heterogeneity and anomalous hydrogen bonding in a series of primary alkylammonium nitrate ionic liquids revealed by High-energy X-ray diffraction experiments and MD simulations

    Xuedan Song, Hiroshi Hamano, Ryo Kanzaki, Yasuo Kameda, Shinji Kohara, Kenta Fujii, Yasuhiro Umebayashi

    32nd International Conference on Solution Chemistry  2011.8 

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  • Raman spectroscopic study on N-methylimidazolium based Protic Ionic Liquids: Are they truly Ionic Liquids?

    Hiroyuki Doi, Xuedan Song, Ryo Kanzaki, Yasuhiro Umebayashi

    32nd International Conference on Solution Chemistry  2011.8 

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  • NMR studies on the rotational and translational motions of ionic liquids composed of 1-ethyl-3-methylimidazolium cation and bis(trifluoromethanesulfonyl)amide and bis(fluorosulfonyl)amide anions and their binary systems including lithium salts

    Kikuko Hayamizu, Seiji Tsuzuki, Shiro Seki, Yasuhiro Umebayashi

    4th Congress on Ionic Liquids  2011.6 

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  • Physicochemical and Acid-Base Properties of New Protic Ionic Liquids with 2-hydroxyethyl Groups

    UMEBAYASHI YasuhiroXuedan Song, Ryo Kanzaki, Yasuhiro Umebayashi

    4th Congress on Ionic Liquids  2011.6 

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  • High-energy X-ray diffraction study on liquid structure of 1-ethyl-3-methylimidazolium based ionic liquids with the aid of MD simulations

    Yasuhiro Umebayashi, Kenta Fujii, Hiroshi Hamano, Babak Minofar, Shiro Seki, Yasuo Kameda

    4th Congress on Ionic Liquids  2011.6 

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  • Universalization of molecular volume and refractive index of room-temperature ionic liquids

    Shiro Seki, Seiji Tsuzuki, Kikuko Hayamizu, Yasuhiro Umebayashi, Nobuyuki Serizawa, Katsuhito Takei, Hajime Miyashiro

    4th Congress on Ionic Liquids  2011.6 

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  • 【依頼】イオン液体の配座異性と最近接イオン間相互作用 Invited

    梅林 泰宏

    第10回化学・材料研究セミナー  2011.1 

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  • 【invited】Ion solvation and liquid structure of ionic liquids as nano-organized media

    UMEBAYASHI Yasuhiro

    2010 International Chemical Congress of Pacific Basin Societies (PACIFICHEM 2010)  2010.12 

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  • Cation dependence of acid-base properties of CF3SO3- based protic ionic liquids

    Xuedan Song, Ryo Kanzaki, Shin-ichi Ishiguro, Yasuhiro Umebayashi

    2010 International Chemical Congress of Pacific Basin Societies (PACIFICHEM 2010)  2010.12 

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  • 【Invited】Liquid structure of ionic liquids revealed by scattering experiments with the aid of molecular simulations Invited International conference

    Yasuhiro Umebayashi, Kenta Fujii, Yasuo Kameda, Shinji Kohara, José N. Canongia Lopes, Agílio A, H. Pádua, Shin-ichi Ishiguro

    239th ACS National Meeting, Physical Division, Symposium on the Physical Chemistry of Ionic Liquids  2010.3 

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  • 【招待】電解質溶液における分子の柔軟性に関する実験および理論的研究 Invited

    梅林 泰宏

    第32回溶液化学シンポジウム 溶液化学研究会学術賞 受賞講演  2009.11 

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  • 【依頼】イオン液体の液体構造および金属イオン溶媒和に関する実験および理論的アプローチ Invited

    梅林 泰宏

    第40回電気化学会溶融塩化学講習会 計算機科学 -溶融塩・イオン液体の物性を如何に予測するか?-  2009.11 

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  • On the Molecular Origin of the Nano-Segregated Structure of Ionic Liquids

    Yasuhiro Umebayashi, Kenta Fujii, Yasuo Kameda, Mitsuhiro Kanakubno, Shiro Seki, Shin-ichi Ishiguro

    31st International Conference on Solution Chemistry  2009.8 

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  • Noble and Specific Lithium Ion Stabilization in TFSA Based Ionic Liquids

    Yasuhiro Umebayashi, Shuto Mori, Kenta Fujii, Seiji Tsuzuki, Shiro Seki, Shin-ichi Ishiguro

    31st International Conference on Solution Chemistry  2009.8 

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  • Enhanced nano-segregated structure of primary ammonium nitrate ionic liquids studied by High-energy X-ray diffraction experiments and MD simulations

    Yasuhiro Umebayashi, Wan-Lin Chung, Takushi Mitsugi, Kenta Fujii, Yasuo Kameda, Shin-ichi Ishiguro

    3rd Congress on Ionic Liquids  2009.5 

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  • Structure and the ion-ion interactions of 1-alkyl-2,3,5-trimethylpyrazolium ionic liquids studied by High-energy X-ray diffraction experiments and MD simulations

    Yasuhiro Umebayashi, Shiro Seki, Kikuko Hayamizu, Seiji Tsuzuki, Takushi Mitsugi, Kenta Fujii, Yasuo Kameda, Shin-ichi Ishiguro

    3rd Congress on Ionic Liquids  2009.5 

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  • Enhanced nano-segregated structure of protic 1-alkylimidazolium based ionic liquids revealed by High-energy X-ray diffraction experiments and MD simulations

    Yasuhiro Umebayashi, Wan-Lin Chung, Takushi Mitsugi, Kenta Fujii, Yasuo Kameda, Shin-ichi Ishiguro

    3rd Congress on Ionic Liquids  2009.5 

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  • On the anion dependence of 1-butyl-3-methylimidazolium conformational isomerism studied by Raman spectroscopy, ab initio calculations and MD simulations

    Yasuhiro Umebayashi, Taishi Yamaguchi, Kenta Fujii, Seiji Tsuzuki, José Nuno, Canongia Lopes, Agílio A, H. Pádua, Munetaka Takeuchi, Ryo Kanzaki, Shin-ichi Ishiguro

    3rd Congress on Ionic Liquids  2009.5 

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  • Molecular origin of the nano-segregated structure of ionic liquids

    Yasuhiro Umebayashi, Kenta Fujii, Yasuo Kameda, Mitsuhiro Kanakubno, Shiro Seki, Takushi Mitsugi, Wan-Lin Chung, Shin-ichi Ishiguro

    3rd Congress on Ionic Liquids  2009.5 

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  • 【依頼】エネルギー表示法によるイオン液体中の複素環化合物の溶媒和自由エネルギー計算 Invited

    梅林 泰宏

    出光興産(株) セミナー  2009.4 

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  • 【依頼】X線散乱実験とMDシミュレーションによるイオン液体の液体構造解析 Invited

    梅林 泰宏

    株式会社リガク セミナー  2009.2 

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  • 【依頼】環境調和型メディアの探索とナノ不均一溶液の科学 Invited

    梅林 泰宏

    東京農工大 直井勝彦研究室セミナー  2009.2 

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  • 【招待】イオン液体の構造とダイナミクス-実験と理論からのアプローチ- Invited

    梅林 泰宏

    日本化学会西日本大会  2008.11 

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  • The potential energy landscape of bis(fluorosulfonyl)amide

    Karina Shimizu, Agílio A, H. Pádua, Yasuhiro Umebayashi, Shuhei Fukuda, Kenta Fujii, Shin-ichi Ishiguro, José N. Canongia Lopes

    Annual Meeting of European/Japanese Molecular Liquid Group 2008 (EMLG/JMLG2008)  2008.8 

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  • Liquid Structure of Low-viscosity Ionic Liquid, 1-Ethyl-3-methylimidazolium Bis(fluorosulfonyl) Amide

    UMEBAYASHI YasuhiroKenta Fujii, Shuhei Fukuda, Karina Shimizu, Agílio A, H. Pádua, José Nuno, A. Canongia Lopes, Shiro Seki, Yasuhiro Umebayashi, Shin-ichi Ishiguro

    Annual Meeting of European/Japanese Molecular Liquid Group 2008 (EMLG/JMLG2008)  2008.8 

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  • Structural difference between imidazolium and pyrrolidinium ionic liquids revealed by X-ray diffraction and MD simulations

    Yasuhiro Umebayashi, Shuhei Fukuda, Kenta Fujii, José Nuno, A. Canongia Lopes, Agílio A, H. Pádua, Shiro Seki, Yasuo Kameda, Shinji Kohara, Ryo Kanzaki, Shin-Ichi Ishiguro

    Annual Meeting of European/Japanese Molecular Liquid Group 2008 (EMLG/JMLG2008)  2008.8 

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  • Anion dependence of 1-butyl-3-methylimidazolium conformational isomerism studied by Raman spectroscopy and MD simulations

    Yasuhiro Umebayashi, Taishi Yamaguchi, Shuhei Fukuda, Kenta Fujii, José Nuno, A. Canongia Lopes, Agílio A, H. Pádua, Munetaka Takeuchi, Ryo Kanzaki, Shin-ichi Ishiguro

    Conference on Molten Salts and Ionic Liquids (EUCHEM 2008)  2008.8 

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  • Relationships Between Molecular Structures and Electrochemical & Physicochemical Properties of Room-Temperature Ionic Liquids for High-Performance Lithium-Ion Secondary Batteries

    Shiro Seki, Yo Kobayashi, Yasutaka Ohno, Takeshi Kobayashi, Hajime Miyashiro, Yuichi Mita, Kikuko Hayamizu, Seiji Tsuzuki, Kenta Fujii, Yasuhiro Umebayashi, Shin-ichi Ishiguro

    Conference on Molten Salts and Ionic Liquids (EUCHEM 2008)  2008.8 

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  • Alkyl-Chain Dependence On Meso- And Micro-Scale Liquid Structure Of Imidazolium Based Room Temperature Ionic Liquid

    Kenta. Fujii, Shuhei. Fukuda, Ryo. Kanzaki, Toshiyuki. Takamuku, Mitsuhiro. Kanakubo, Y.asuo Kameda, Yasuhiro Umebayashi, Shin-ichi. Ishiguro

    Conference on Molten Salts and Ionic Liquids (EUCHEM 2008)  2008.8 

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  • 【招待】広角X線散乱実験および分子動力学計算によるイオン液体の液体構造 Invited

    梅林 泰宏

    第164回溶融塩委員会  2007.10 

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  • イオン液体の構造とダイナミクス-実験と理論からのアプローチ-

    梅林 泰宏

    2008日本化学会西日本大会  2007.10 

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  • 【招待】金属イオン溶媒和による溶媒分子の異性化 -実験と理論によるアプローチ- Invited

    梅林 泰宏

    第57回錯体化学討論会 ミニシンポジウム 錯体化学の成長と発展を支える基礎化学としての錯体化学反応論  2007.9 

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  • Molecular and liquid structures of 1-ethyl-3-methylimidazolium ionic liquids with various anons

    Yasuhiro Umebayashi, Shuhei Fukuda, Munetaka Takeuchi, Ryo Kanzaki, Kenta Fujii, Toshiyuki Takamuku, Shin-ichi Ishiguro

    2nd International Congress on Ionic Liquids (COIL-2)  2007.8 

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  • 【Invited】Liquid structure and Ion solvation of Room Temperature Ionic Liquids Invited International conference

    Yasuhiro Umebayashi, Kenta Fujii, Ryo Kanzaki, Shin-Ichi Ishiguro

    International Symposium on Task-Specific Ionic Liquids  2007.8 

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  • Lithium Ion Solvation in Bis-(trifluoromethanesulfonyl) Imide type Room Temperature Ionic Liquids – DFT Calculations and Raman Spectroscopic Study –

    Yasuhiro Umebayashi, Takushi Mitsugi, Takao Fujimori, Shuhei Fukuda, Kenta Fujii, Ryo Kanzaki, Munetaka Takeuchi, Shin-Ichi Ishiguro

    30th International Conference on Solution Chemistry  2007.7 

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  • On the Conformation of N-alkyl-N-methylpyrrolidinium Bis-(trifluoromethanesulfonyl) Imide Room Temperature Ionic Liquids – DFT Calculations and Raman Spectroscopic Study –

    Yasuhiro Umebayash, Takao Fujimori, Shuhei Fukuda, Kenta Fujii, Ryo Kanzaki, Munetaka Takeuchi, Shin-Ichi Ishiguro

    30th International Conference on Solution Chemistry  2007.7 

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  • Solvation Number and Conformation of N,N-Dimethylacrylamide and N,N-Dimethylpropionamide in the Coordination Sphere of the Cobalt(II) Ion in Solution studied by FT-IR and FT-Raman Spectroscopy

    Shin-ichi Ishiguro, Yasuhiro Umebayashi, Kenta Fuji

    30th International Conference on Solution Chemistry  2007.7 

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  • Acidity and Basicity of Ionic Liquids of Onium Salt

    Ryo Kanzaki, Yasuhiro Umebayashi, Shin-ichi Ishiguro

    30th International Conference on Solution Chemistry  2007.7 

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  • Conformational Equilibrium of Bis(fluoroslufonyl) Imide Anion in Room-Temperature Ionic Liquid

    Kenta Fujii, Yasuhiro Umebayashi, Shin-ichi Ishiguro

    30th International Conference on Solution Chemistry  2007.7 

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  • Solvation Structure of Li+ in Concentrated LiPF6-Propylene Carbonate Solutions – Time-of-Flight neutron diffraction and MD simulation –

    Munetaka Takeuchi, Yasuo Kameda, Yasuhiro Umebayashi, Mohanmmad Abdul Wahab, Shuhei Fukuda, Shin-Ichi Ishiguro, Motoya Sasaki, Yuko Amo, Takeshi Usuki

    30th International Conference on Solution Chemistry  2007.7 

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  • 【依頼】イオン液体の溶液化学 Invited

    梅林 泰宏

    京都大学 大学院工学研究科 講演  2007.5 

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  • 【招待】プロトン性イオン液体硝酸エチルアンモニウムの酸塩基性と液体構造 Invited

    梅林 泰宏

    日本化学会九州支部シンポジウム 「イオン液体化学の基礎とイノベーション」  2006.12 

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  • 【依頼】イオン液体の構造とイオン溶媒和 Invited

    梅林 泰宏

    第4回低温溶融塩・イオニックリキッドセミナー  2006.11 

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  • 【招待】溶媒コンフォメーションとイオンの溶媒和・反応性 -分子性液体からイオン液体まで Invited

    梅林 泰宏

    第29回溶液化学シンポジウム  2006.11 

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  • 【招待】イオン液体の構造・ダイナミクスと金属イオン溶媒和 Invited

    梅林 泰宏

    日本分析化学会第55年会 シンポジウム イオン液体-分離・分析の新素材  2006.9 

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  • 【Invited】Conformation Change and Liquid Structure of Room Temperature Ionic Liquid 1-ethyl-3-methylimidazolium bis-(trifluoromethanesulfonyl) Imide Invited International conference

    Yasuhiro Umebayashi, Takao Fujimori, Kenta Fujii, Yasufumi Soejima, Ryo Kanzaki, Toshiyuki Takamuku, Shin-ichi Ishiguro

    20th International Conference on Raman Spectroscopy (ICORS2006)  2006.8 

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  • 【Invited】Molecular and Liquid Structure of Ionic Liquids as Nano-Organized Materials Invited International conference

    UMEBAYASHI Yasuhiro

    3rd International Workshop on Supramolecular Nanoscience of Chemically, Programmed Pigments (SNCPP06)  2006.6 

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  • 【依頼】溶媒和クラスターと溶媒クラスター -Raman分光、DFT計算及びMDシミュレーションー Invited

    梅林 泰宏

    分子動力学ソフトMaterials Explorer新バージョン発表セミナー  2006.1 

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  • Raman spectroscopic study and DFT calculations of Room Temperature Ionic Liquid 1-ethyl-3-methyl-imidazolium salts

    Yasuhiro Umebayashi, Tetsuya Sukizaki, Takao, Fujimori, Kenta Fujii, Shin-Ichi Ishiguro

    2005 International Chemical Congress of Pachific Basin Societies (PACIFICHEM2005)  2005.12 

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  • Preferential solvation of manganese(II), nickel(II) and zinc(II) ions in solvent mixtures of N-methylformamideand and N,N-dimethylformamide

    Kenta Fujii, Takashi Kumai, Toshiyuki Takamuku, Yasuhiro Umebayashi, Shin-ichi Ishiguro

    2005 International Chemical Congress of Pachific Basin Societies (PACIFICHEM2005)  2005.12 

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  • Thermodynamic Study on Adduct Formation between Phosphates and Tetraamines

    Ryo Kanzaki, Yasuhiro Umebayashi, Shin-ichi Ishiguro

    4th International and 6th Japan-Chine Joint Symposium on Calorimetry and Thermal Analysis (CATS-2005)  2005.10 

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  • Cobalt(II) Chloro Complexation in N-Methylformamide-N,N-Dimethylformamide Mixtures Studied by Titration Calorimetry

    UMEBAYASHI YasuhiroKenta Fujii, Yasumasa Matsumoto, Yoshie Kaieda, Daisuke Kobayashi, Yasuhiro Umebayashi, Shin-ichi Ishiguro

    4th International and 6th Japan-Chine Joint Symposium on Calorimetry and Thermal Analysis (CATS-2005)  2005.10 

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  • 【招待】Raman分光から見たイオン性液体と金属イオン溶媒和 Invited

    梅林 泰宏

    第55回錯体化学討論会 ミニシンポジウム イオン液体と錯体化学  2005.9 

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  • 【Invited】Conformation Change of Room Temperature Ionic Liquids upon Metal Ion Solvation Invited International conference

    Yasuhiro Umebayashi, Takao, Fujimori, Kenta Fujii, Shin-Ichi Ishiguro

    The 11th Kyushu International Symposium on Physical Organic Chemistry  2005.9 

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  • Molecular and Liquid Structures of Room Temperature Ionic Liquids, 1-methyl-3-ethyl-imidazolium salts

    Kenta Fujii, Takao Fujimori, Yasushi Soejima, Yasuhiro Umebayashi, Toshiyuki Takamuku, Sshin-ichi Ishiguro

    The 11th Kyushu International Symposium on Physical Organic Chemistry (KISPOC IX)  2005.9 

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  • On the conformation of Room Temperature Ionic Liquid 1-methyl-3-ethyl-imidazolium cation

    Yasuhiro Umebayashi, Tetsuya Sukizaki, Takao Fujimori, Kenta Fujii, Shin-ichi Ishiguro

    29th International Conference on Solution Chemistry  2005.8 

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  • DFT calculations and Raman spectroscopic study on the solvent conformation change upon coordination to metal ions

    UMEBAYASHI YasuhiroYasuhiro Umebayashi, Babara Mroz, Mitsunori Asada, Kenta Fujii, Kai Matsumoto, Yutaka Mune, Michael Probst, Shin-ichi Ishiguro

    29th International Conference on Solution Chemistry  2005.8 

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  • 【招待】XAFS法による金属イオン配位により誘起される溶媒の構造異性化に関する研究 Invited

    梅林 泰宏, 浅田 光則, 小倉 崇祐, 速水 真也, 石黒 慎一, 丹羽 尉博, 小堤 和彦

    平成16年度ナノテクノロジー総合支援プロジェクト 放射光グループ研究成果報告会  2005.6 

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  • Confomation change of Room Temperature Ionic Liquid, 1-metyl-3-ethyl-imidazolium cation studied by Raman spectroscopy and DFT calculation

    Kenta Fujii, Takao Fujimori, Yasuhiro Umebayashi, Shin-ihci Ishiguro

    17th Joint Seminar of the Busan Branch of the Korean Chemical Society and the Kyushu Branch of the Chemical Society of Japan  2005.5 

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  • 【招待】金属イオン溶媒和における溶媒の分子構造と液体構造 Invited

    梅林 泰宏

    第72回電気化学会大会  2005.4 

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  • 【依頼】金属イオンへの配位による溶媒の構造異性化 -Raman分光とDFT計算- Invited

    梅林 泰宏

    立命館大学小堤研究室セミナー  2004.7 

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    Presentation type:Public lecture, seminar, tutorial, course, or other speech  

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  • 【Invited】Raman Spectroscopic Study on the Steric Preferential Solvation to Metal Ion Invited International conference

    Yasuhiro Umebayashi, Shin-ichi Ishiguro

    New Trends in Solution Chemistry  2003.9 

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  • Raman spectroscopic study on the solvent conformational change upon solvation to metal ion

    Yasuhiro Umebayashi, Kai Matsumoto, Yutaka Mune, Shin-ichi Ishiguro

    28th International Conference on Solution Chemistry  2003.8 

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  • Enthalpy of transfer for the transition state of complex formation

    Yasuhiro Umebayashi, Yuhichi Murakami, Nobuyuki Shigeta, Shin-ichi Ishiguro

    28th International Conference on Solution Chemistry  2003.8 

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  • Individual Solvation Numbers around first transition metal ions in N, N-dimethylformamide and N, N-dimethylacetamide mixtures

    Yasuhiro Umebayashi, Kai Matsumoto, Manabu Watanabe, Shin-ichi Ishiguro

    27th International Conference on Solution Chemistry  2001.8 

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  • 【招待】Raman分光法による金属イオンの溶媒和構造の研究 Invited

    梅林 泰宏

    第39回 化学関連支部合同九州大会  2001.7 

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  • Thermodynamic Study on Zn(II)-Triamine-Pyrophospate Mixed Ligand Complexes as a Model for an Active Site of Apase

    Yasuhiro Umebayashi, Yoshie Kuwahara, Shun-ichiro Yamaguchi, Shin-ichi Ishiguro

    26th International Symposium on Macrocyclic Chemistry  2001.7 

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  • Thermodynamic Study on Triamine-Pyrophosphate adduct Formation as a Model for Pyrophosphate Receptor

    Shun-ichiro Yamaguchi, Tei Maki, Jyunko Hirose, Yoshie Kuwahara, Yasuhiro Umebayashi, Shin-ichi Ishiguro

    26th International Symposium on Macrocyclic Chemistry  2001.7 

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  • 【招待】非水混合溶媒中における金属イオンの選択的溶媒和 Invited

    梅林 泰宏

    第36回錯体化学若手の会ミニシンポジウム  2001.3 

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  • 【Invited】Preferential Solvation of Metal Ions in Mixed Solvent Studied by Raman Spectroscopy Invited International conference

    Yasuhiro Umebayashi, Kai Matsumoto, Manabu Watanabe, Shin-Ichi Ishiguro

    2000 International Chemical Congress of Pachific Basin Societies, Dec  2000.12 

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    Language:English   Presentation type:Oral presentation (invited, special)  

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  • Solvation Steric Effect and Selective Solvation of Lamthanoid(III) Ions in N,N-Dimethylformamide-N,N-Dimethylacetamide

    Shin-ichi Ishiguro, Yasuhiro Umebayashi, Kazusuke Kato, Isamu Mekata

    26th International Conference on Solution Chemistry  1999.7 

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  • Raman Spectroscopic Study on the Steric Preferential Solvation of Metal Ions in Mixed Solvents

    Yasuhiro Umebayashi, Manabu Watanabe, Shin-ichi Ihiguro

    26th International Conference on Solution Chemistry  1999.7 

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  • Distribution Thermodynamics of cobalt(II) thiocyanate Complex in Nonionic Surfactant Micelles.

    UMEBAYASHI Yasuhiro, Mari Shin, Shin-ichi Ishiguro

    8th International Symposium on Solubility Phenomena  1998.8 

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  • Formation and Structure of Nickel(II) Halogeno Complexes in Solvent Showing Solvation Steric Hindrance

    Shin-ichi Ishiguro, Yasuhiro Umebayashi, Morito Komiya, Takeshi Iijima

    8th International Symposium on Solubility Phenomena  1998.8 

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  • Thermodynamics of 1,10-Phenanthoroline in Micelles of Nonionic Surfactants

    Ryo Kanzaki, Yasuhiro Umebayashi, Shin-ichi Ishiguro

    8th International Symposium on Solubility Phenomena  1998.8 

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  • 【招待】高エネルギーX線回折実験とMDシミュレーションによるイオン液体の液体構造に関する研究 -陰イオン依存性- Invited

    梅林 泰宏

    電気化学会第77回大会 S1シンポジウム:溶液化学の新しい展開 

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Industrial property rights

  • 炭化水素油の脱芳香族精製方法

    鳥居 秀則, 今西 由衣, 田中 隆三, 梅林 泰宏

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    Applicant:出光興産株式会社

    Application no:特願2009-072677  Date applied:2009.3

    Announcement no:特開2010-222497  Date announced:2010.10

    J-GLOBAL

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  • 炭化水素油の脱硫もしくは脱窒素精製方法

    鳥居 秀則, 今西 由衣, 田中 隆三, 梅林 泰宏

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    Applicant:出光興産株式会社

    Application no:特願2009-062124  Date applied:2009.3

    Announcement no:特開2010-215737  Date announced:2010.9

    J-GLOBAL

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  • イオン液体特性測定方法

    野村 聡, 岩本 恵和, 芝田 学, 梅林 泰宏, 石黒 慎一, 神崎 亮

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    Applicant:株式会社堀場製作所, 国立大学法人九州大学

    Application no:特願2006-242190  Date applied:2006.9

    Announcement no:特開2008-064578  Date announced:2008.3

    J-GLOBAL

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Research Projects

  • Analysis, Design, and Construction of Highly Concentrated Electrolytes for Innovative Electrodeposition Technologies

    Grant number:20H05663

    2020.8 - 2025.3

    System name:Grants-in-Aid for Scientific Research

    Research category:Grant-in-Aid for Scientific Research (S)

    Awarding organization:Japan Society for the Promotion of Science

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    Grant amount:\198900000 ( Direct Cost: \153000000 、 Indirect Cost:\45900000 )

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  • Liquid electrolyte formulation for rapid Li-ion hopping conduction and fast electrochemical reactions

    Grant number:18H03926

    2018.4 - 2022.3

    System name:Grants-in-Aid for Scientific Research

    Research category:Grant-in-Aid for Scientific Research (A)

    Awarding organization:Japan Society for the Promotion of Science

    DOKKO Kaoru

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    Grant amount:\43550000 ( Direct Cost: \33500000 、 Indirect Cost:\10050000 )

    Highly concentrated electrolytes containing alkali metal salts were prepared, and the coordination structure of alkali metal ions was analyzed by spectroscopic methods. Transport properties and electrochemistry of the highly concentrated electrolytes (HCEs) were investigated. In the HCEs with certain solvents such as sulfones and dinitriles, alkali metal ions exchanged the ligands (solvent and anion) dynamically and diffused more rapidly than the ligands, i.e., hopping conduction of alkali metal ion emerged in the HCEs. The high transference numbers of alkali metal ions were effective in suppressing the concentration polarization and in achieving a relatively high-rate capability of alkali metal batteries.

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  • Thermodynamics, structure and dynamics of ultra-concentrated electrolyte solutions and solvate ionic liqudis

    Grant number:18H01994

    2018.4 - 2021.3

    System name:Grants-in-Aid for Scientific Research

    Research category:Grant-in-Aid for Scientific Research (B)

    Awarding organization:Japan Society for the Promotion of Science

    Umebayashi Yasuhiro

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    Grant amount:\17420000 ( Direct Cost: \13400000 、 Indirect Cost:\4020000 )

    Super-concentrated electrolyte solutions and solvate ionic liquids exhibit ionic conduction and electrode reactions not found in conventional dilute electrolyte solutions. They are hardly explained in the framework of conventional electrolyte solution theory based on continuous dielectric models such as Walden's law and Stokes' law. In addition to macroscopic thermodynamics and transport theory, we approached from structure and dynamics at the molecular level in order to reveal the ion transport and electrode reaction in super-concentrated electrolyte solutions and solvate ionic liquids.

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  • Solvation Structure of Magnesium Ion and Its Electrochemical Reactivity in Ionic Liquids

    Grant number:25620181

    2013.4 - 2015.3

    System name:Grants-in-Aid for Scientific Research

    Research category:Grant-in-Aid for Challenging Exploratory Research

    Awarding organization:Japan Society for the Promotion of Science

    DOKKO KAORU, UMEBAYASHI Yasuhiro, TSUZUKI Seiji

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    Grant amount:\4030000 ( Direct Cost: \3100000 、 Indirect Cost:\930000 )

    The solvation structure of magnesium ion (Mg2+) in an electrolyte consisting of a magnesium salt Mg(N(SO2CF3)2)2 and tetraglyme (G4) was investigated. In the electrolyte, Mg2+ and G4 form a 1:1 complex cation [Mg(G4)]2+. It was revealed that G4 and Mg(N(SO2CF3)2)2 form a thermally stable complex in the molar ratio of 1:1. The melting point of [Mg(G4)](N(SO2CF3)2)2 is 137 degree Celsius, and the complex decomposes at around 200 degree Celsius. The electrochemical deposition of Mg metal was successfully performed in an electrolyte consisting of [Mg(G4)](N(SO2CF3)2)2 and an ionic liquid N-methyl-N-propyl-pyrrolidinium bis(trifluoromethanesulfonyl)amide.

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  • Basic chemistry and application of chemical CO2 capture

    Grant number:24655142

    2012.4 - 2015.3

    System name:Grants-in-Aid for Scientific Research

    Research category:Grant-in-Aid for Challenging Exploratory Research

    Awarding organization:Japan Society for the Promotion of Science

    UMEBAYASHI Yasuhiro

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    Grant amount:\4290000 ( Direct Cost: \3300000 、 Indirect Cost:\990000 )

    It is considered that CO2 is one of the causative agents for the global Warming Hence, It is required to reduce atmospheric CO2. Although CO2 absorption processes using aqueous solutions, it is necessary to develop more efficient process. Ionic liquids, which consist of only ions and have a melting point around ambient temperature, show good CO2 solubility so that their applications to the next generation CO2 absorption process is eagerly expected. For the acetate based ionic liquid, the solution mechanism that CO2 forms a new compound to dissolve in them is proposed. However, its structure in solution is still unknown. Knowledge of such a solution mechanism and/or structure of newly formed CO2 compound in solution leads to develop more efficient CO2 absorption liquids/process. In this study, structure of newly formed CO2 compound in an acetate based ionic liquid was revealed by means of combination of spectroscopic/scattering experiments and theoretical calculations.

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  • Specific free energy picture and solvation structure formed in ionic liquids

    Grant number:23350033

    2011.11 - 2014.3

    System name:Grants-in-Aid for Scientific Research

    Research category:Grant-in-Aid for Scientific Research (B)

    Awarding organization:Japan Society for the Promotion of Science

    UMEBAYASHI Yasuhiro, KAMEDA Yasuo, KANAKUBO Mitsuhiro, KANZAKI Ryo

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    Grant amount:\6630000 ( Direct Cost: \5100000 、 Indirect Cost:\1530000 )

    Ionic liqudis show specific liquid and/or solvation structure, which have never been found in ordinary solvents. In this subject, to elucidate specific solvation in ionic liquids at a molecular and/or atomistic level, we foucused on the CO2 solvation in ionic liquids and studied (1) CO2 solvation in ionic liquids in terms of solvation structure and energy by means of molecular simulation asisted liquid structure anakyses and free energy calculations, (2) structure and thermidynamics of CO2 protonatin in ionic liquids, and (3) CO2 electrochemical reduction in ionic liquids.

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  • 動的構造因子による室温イオン液体の構造とダイナミクスの解明

    Grant number:10F00750

    2010 - 2012

    System name:科学研究費助成事業

    Research category:特別研究員奨励費

    Awarding organization:日本学術振興会

    梅林 泰宏, BABAK Minofar

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    Grant amount:\2300000 ( Direct Cost: \2300000 )

    イオン液体は常温で液体の有機物塩であり、不揮発性や難燃性という環境や生態系に好ましい性質を持ち、水や非水溶媒に変わる第3の新たな溶媒・液体として、特に電解質としての応用は環境に調和した安全で高いエネルギー密度の蓄電・発電デバイスに資すると期待されている。一方、その最も重要な物性であるイオン伝導や粘性は、水や非水溶媒同様に、分子レベルで理解できたとはいいがたい。近年の液体理論によれば、液体の粘性は、静的および動的構造因子で記述することができ、中性子やX線散乱実験により明らかにできるものの、時間・空間スケールには制限がある。本研究では、イオン液体の集団的ダイナミクスを中性子準男準弾性散乱やスピンエコー実験、X線非弾性散乱に加え、低波数Ramanおよび遠赤外分校実験など実験的に明らかにするとともに、MDシミュレーションにより原子レベルで解明する。
    具体的には、
    1)動的構造因子によるイオン液体ナノ相分離構造の解明:中性子スピエコー実験から評価した動的散乱因子(中間散乱関数)および粘性率周波数依存性の解析を進め、分子論に立脚する液体理論に基づき緩和過程の空間・時間スケールを解明し、MDシミュレーションと比較検討した。
    2)イオン液体の液体構造に及ぼすアルカリ金属イオン添加効果:イオン液体中の金属イオンの伝導機構を解明するには、イオン半径依存性を明らかにする必要がある。溶媒和構造を明らかにした一連のアルカリ金属イオンのイオン伝導率や粘性率を明らかにし、低波数Ramanおよび遠赤外分光により集団的ダイナミクスを明らかにした。
    3)硝酸エチルアンモニウム(EAN)の構造とダイナミクス:OH基を導入した硝酸エタノールアンモニウム(EtAN)は、最近、バイオコンパチブルイオン液体として注目されている。実空間分解能の高いSPring-8高エネルギーX線回折実験およびMDシミュレーションにより最近接イオン間相互作用を明らかにした。

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  • Metal ions solvation structure and complex formation in ionic liquids

    Grant number:20350037

    2008 - 2010

    System name:Grants-in-Aid for Scientific Research

    Research category:Grant-in-Aid for Scientific Research (B)

    Awarding organization:Japan Society for the Promotion of Science

    ISHIGURO Shin-ichi, UMEBAYASHI Yasuhiro, KANZAKI Ryo

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    Grant amount:\19630000 ( Direct Cost: \15100000 、 Indirect Cost:\4530000 )

    Ionic liquids of novel solvent has been strongly expected to apply them as a separation/extraction media, materials for electric devices instead of ordinary aqueous/non-aqueous solvents in terms of low environmental load. Nevertheless, the knowledge on their properties as solvent(reaction fields) is not enough. In this study, to find unique chemical reactions in ionic liquids, we investigated proton and metal ion solvation structure and their reactivity to establish structure-reactivity relationship.

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  • Structure and property relationship of ionic liquids ionics

    Grant number:19350033

    2007 - 2008

    System name:Grants-in-Aid for Scientific Research

    Research category:Grant-in-Aid for Scientific Research (B)

    Awarding organization:Japan Society for the Promotion of Science

    YASUHIRO Umebayashi

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    Grant amount:\9360000 ( Direct Cost: \7200000 、 Indirect Cost:\2160000 )

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  • Cluster Structure of Ionic Liquids and their Solvent Properties for Reactions in Solution

    Grant number:17350037

    2005 - 2007

    System name:Grants-in-Aid for Scientific Research

    Research category:Grant-in-Aid for Scientific Research (B)

    Awarding organization:Japan Society for the Promotion of Science

    ISHIGURO Shin-ichi, UMEBAYASHI Yasuhiro, KANZAKI Ryo

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    Grant amount:\15540000 ( Direct Cost: \14700000 、 Indirect Cost:\840000 )

    Ionic Liquids have complicated molecular structures, and intramolecular and intermolecular interactions are overlapped over the range of 300-700 pm. In the present study, we aimed to isolate these interactions using X-ray scattering and theoretical DFT and MD simulation. Finally, we succeeded to extract not only short range cation-anion interactions, but also long range cation anion, cation-cation and anion-anion interactions in the range of < 2000 pm. Such a long-range interaction has been obtained for the first time over the world, and this method of approach can be applied for various types of ionic liquids. Indeed, this method of approach was applied for ionic liquids composed of imidazolium and pyrolidinium cations with varying length of alkyl chains, and the space distribution of anions around the cation, and detailed atom-atom interactions can be extracted.
    On the other hand, ionic liquids composed of alkylammonium ions anions are called as protic ionic liquids. Protic ionic liquids involve dissociable protons, and a part of protons within cations are transferred to anions to give acid and base molecules. The extent of proton transfer is expressed in terms of K_IL= [acid] [base], and the K_IL, is a measure of the acid-base property of protic ionic liquids. We determined the K_IL, value of ethylanmmonium nitrate ionic liquid directly by potentiometry using an IS FET (ion-selective field-effect transistor) electrode, for the first time over the world The K_IL, value strongly depends on the nature of anion, the hydrogen bonding ability of which usually leads to a Jorge K_IL, (or small pK_IL).

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  • 金属イオンへの配位により誘起される溶媒のコンフォメーション変化に関する研究

    Grant number:15750052

    2003 - 2004

    System name:科学研究費助成事業

    Research category:若手研究(B)

    Awarding organization:日本学術振興会

    梅林 泰宏

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    Grant amount:\3500000 ( Direct Cost: \3500000 )

    溶液中の金属イオンや錯体の溶媒和構造は反応性を支配する。非水溶媒中の金属イオンには溶媒和の立体効果が働く。一方、錯体の場合も金属の第1配位圏の配位子間立体相互作用は、錯体の反応性・立体選択性を制御するうえで非常に重要である。これまで、金属第1配位圏の配位子間立体反発に着目し、溶媒和錯体をモデルとして嵩高い溶媒や混合溶媒中での反応性と溶媒和構造に関する熱力学的および構造化学的研究を行った。金属イオンに配位することによる溶媒DMPAの構造変化を見出した。この現象を定量的に理解できれば、一般の錯体・錯体触媒に拡張することができる。
    そこで、本研究の目的を
    (1)金属イオンへの配位により誘起されるコンフォメーション変化の定量的解明
    (2)金属イオン第1配位圏の立体反発パラメータの検討
    (3)動的立体制御の可能性の検討
    とし、熱力学・構造化学の点から定量的な理解を深めるとともにその応用についても検討する。
    本研究の結果、得られた成果として、
    (1)種々の金属イオンのDMPA溶媒和錯体のRaman分光とDFT計算から、金属イオン配位により誘起されるDMPAの構造異性化が金属イオン第1配位圏内の溶媒和DMPA間立体生涯に金することを定量的に示した。
    (2)DMPA類縁体である種々の溶媒で、溶媒和金属錯体の単結晶X線構造解析より、溶媒和分子間立体障害が、所謂、コーンアングルに支配されることを示した。
    (3)励起状態において、構造異性化するジメチルアミノピリジン溶媒和錯体を合成し、その蛍光挙動を調べた。また、キレート配位子ビピリジンのプロトン付加・金属イオン配位に伴う構造異性化について、反応速度論及びDFT計算により調べたところ、配位数が減少する解離的機構の遷移状態においてさえ、溶媒和圏内に立体障害があることを定量的に示した。
    があげられる。

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  • Structure of solvent clusters and its effect on metal-ion reactivity in non-aqueous solvent mixtures

    Grant number:13440222

    2001 - 2002

    System name:Grants-in-Aid for Scientific Research

    Research category:Grant-in-Aid for Scientific Research (B)

    Awarding organization:Japan Society for the Promotion of Science

    ISHIGURO Shinichi, UMEBAYASHI Yasuhiro

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    Grant amount:\14800000 ( Direct Cost: \14800000 )

    Solvation of the metal-ion and its complexation in some nonaqueous solvents and their mixtures have been studied by means of titration spectrophotometry, catorimetry and Roman spectrometry, all these are on-line controlled for the titration procedure and data acquisition. In the present project, we investigated solvation steric effect (SSE) in the initial and transition states of the metal-ion complexation in nonaqueous solvent mixtures. Solvents used are tetramethylurea (TMU), N,N-dimethylformanmide (DMF), N,N-dimethylacetamide (DMA), N,N-dimethylpropionamide (DMPA), etc. TMU and DMPA show a strong SSE, i.e., the solvation number of the metal ion is reduced, while DMF and DMA show a weak SSE, i.e., the solvation number is kept the same as that in water. It is found that DMPA has two conformational isomers. The two isomers coexist in equilibrium, and the equilibrium constant, and the corresponding enthalpy and entropy values were obtained. The conformational equilibrium largely changes when the solvent molecules simultaneously coordinate to the metal ion, which is ascribed to the conformational change arising from the strong solvation steric effect. This leads to a remarkable difference in the complexation behavior of the manganese(II) ion in TMU and DMPA, despite that the metal ion is five-solvated in both the solvents. The solvation energy of an activated species formed at the transition state of metal-ion complexation is also investigated from the view-point of solvation steric effect. The solvation enthalpy difference of an activated species is defined as the enthalpy of transfer of the activated species from solvent A to B, which is evaluated from the enthalpies of activated measured in the solvents and the enthalpy of transfer of reactants at the initial state from solvent A to B. We found that the solvation steric effect operates significantly at the transition state.

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  • Titration Calorimetry System for Measurement of Formation Enthalpies of Organometal Complexes

    Grant number:12554025

    2000 - 2001

    System name:Grants-in-Aid for Scientific Research

    Research category:Grant-in-Aid for Scientific Research (B)

    Awarding organization:Japan Society for the Promotion of Science

    ISHIGURO Shin-ichi, UMEBAYASHI Yasuhiro

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    Grant amount:\13200000 ( Direct Cost: \13200000 )

    With the aim of calorimetric measurement for the formation of organo-transition metal complexes, we prepared a new vessel for titration calorimetry. The volume of initial test solution is reduced to 4 ml with a new vessel (2 cmφ x 4 cmh). Heat sensor is a couple of thermistors, which can detect temperature changes by 10^<-5> degree. In the present work, we studied complexation of soft-metal soft-ligand Ag^+-EPh_3 (E = P, As, Sb) systems in acetonitrile, which is a stronger π acceptor but weaker σ donor than dimethyl sulfoxide (DMSO). The formation constant of [Ag(EPh_3)]^+ reduced in the order P > As > Sb, and the mono-, bis-, tris- and tetrakis-PPh_3 complexes are formed in AN. The result is compared with that in pyridine (Py), which is a stronger π acceptor and σ donor than DMSO. The soft Ag^+ ion thus shows a specific dπ-π interaction with AN and Py but not with DMSO. The [Ag(PPh_3)_4]^+ is found in AN but not in DMSO and Py. Enthalpies of transfer of individual [Ag(PPh_3)_n]^+ (n = 0-3) species from DMSO to AN show that the value is close to zero for n=0 and become more positive for the complex with increasing n, indicating that the specific dπ-π Ag^+-AN interaction is weakened by bound PPh_3 ligand. Similarly, enthalpies of transfer of individual [Ag(PPh_3)_n]^+ (n = 0-3) species from DMSO to Py show that the value is negative and large for n=0 and become less negative for the complex with increasing n, and the value is slightly negative for [Ag(PPh_3)_3]^+. This indicates that the specific dπ-π Ag^+-Py interaction is almost disappeared by bound PPh_3 ligand. These facts leads to the conclusion that weakened dπ-π interaction and weak σ donating ability of AN is essential for the formation of tetrahedral [Ag(PPh_3)_4]^+ complex.

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  • 希土類金属イオンの立体効果による選択的溶媒和の熱力学的・構造化学的研究

    Grant number:11740374

    1999 - 2000

    System name:科学研究費助成事業

    Research category:奨励研究(A)

    Awarding organization:日本学術振興会

    梅林 泰宏

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    Grant amount:\2200000 ( Direct Cost: \2200000 )

    N,N-dimethylformamide(DMF)およびN,N-dimethylacetamidet(DMA)混合溶媒中の希土類金属イオンの溶媒和数は金属イオンに強く依存し、イオン半径が小さなNd(III)イオンでは溶媒和数の減少がDMAモル分率0.8でおこり、イオン半径が小さなGd(II)イオンやTm(III)ではよりDMA分率が小さな領域で溶媒和数の減少が起きた。しかしながら、臭化物イオンとの錯形成反応ではイオン半径によらず、Nd(II)イオンもY(III)イオンもDMAモル分率0.4付近で外圏錯形成から内圏錯形成へと転移する。このことはRaman法により得られた混合溶媒中のDMA溶媒和数から次のように説明できる。すなわち、DMFとDMAの溶媒和数が等しくなる等溶媒和点は金属イオンのイオン半径に大きく依存するものの、DMA分率0.4付近ではいずれの希土類金属イオンでもDMA溶媒和数が3程度であり、DMAが3分子配位すると臭化物イオンとの錯形成により臭化物イオンが金属イオン内圏に進入する。DMA3分子が溶媒和した状態は溶媒和の立体効果が現れる点であり、臭化物イオンとの錯形成では金属イオン内圏での溶媒分子との交換を伴う錯形成が有利になる転移点となる。
    以上の希土類金属イオンの結果を踏まえ、今年度は更に溶媒和の立体効果の知見を得るため、種々の第一遷移金属イオンのN,N-dimethylformamide(DMF)およびN,N-dimethylacetamidet(DMA)混合溶媒中の溶媒和数をRaman法により調べた。イオン半径が小さなZn(II)イオンではDMAの溶媒和の立体効果のため、DMFが選択的に溶媒和し、DMA中ではついに配位数の減少が起きる。これは溶媒和の立体効果が、まず、選択的溶媒和により緩和されるが、さらに立体障害が大きくなると、配位数の減少により立体障害を緩和することを意味する。一方、Ni(II)イオンでは選択的溶媒和は起きるが、配位数の減少は見られない。このことは配位数の減少は金属イオンのイオン半径のみならず、電子状態にも依存することを示している。すなわち、d^<10>であるZn(II)イオンは四面体型への構造変化に大きなエネルギーを必要としないが、d^8であるNi(II)イオンでは四面体型への構造変化には大きなエネルギーを必要とする。更に、Mn(II)イオンではDMFの選択的溶媒和も見られなかった。これは以前に得られた溶媒間移行エンタルピーの結果とも一致した。

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  • 白金属-スルホキシド結合の熱化学と構造化学

    Grant number:11120241

    1999

    System name:科学研究費助成事業

    Research category:特定領域研究(A)

    Awarding organization:日本学術振興会

    石黒 慎一, 梅林 泰宏

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    Grant amount:\2000000 ( Direct Cost: \2000000 )

    ジメチルスルホキシド(DMSO)はソフトな金属イオンであるパラジウム(II)に酸素原子と硫黄原子のいずれでも結合することが知られている。実際、結晶中ではcis-[Pd(DMSO-O)_2(DMSO-S)_2]^<2+>の構造をとり、溶液X線回折でも同様の配位構造をとることが示された。では、パラジウム(II)がDMSOを逐次配位する時には酸素と硫黄原子の配位はどの様な順番でおこるのか。本研究ではPdBF_4)_2・4(CH_3CN)_4結晶を合成し、そのアセトニトリル溶液中でDMSOの錯形成を調べ、配位原子が酸素のみのジメチルホルムアミド(DMF)の錯形成と比較した。この結果、第一段階で、DMSOは酸素原子で配位すること、第二段階では硫黄原子で配位することがわかった。硫黄原子が配位するには、まずシグマドナー性の強い酸素原子がtrans位置に存在することが必要であることがわかった。同じ酸素原子配位でもDMSOの方がDMFよりも高い親和力をもつが、これがエントロピーの差に基づく。これは立体障害の大きさに関係している。第二段階のDMSO配位のエントロピーは大きな負の値であり、硫黄原子配位の場合、酸素原子配位に比べて、立体障害を強く受けることを示している。
    逆に、DMSO中で存在している[Pd(DMSO-O)_2(DMSO-S)_2]^<2+>から酸素原子と硫黄原子配位のどちらのDMSOがはずれやすいのかをクロロ錯体の生成で比較した。IRスペクトルとX線回折の結果、硫黄原子がはずれて、[PdCl(DMSO-O)_2(DMSO-S)]^+が生成することがわかった。ただし、ジクロロ錯体になると、一挙に[PdCl_2(DMSO-S)_2]が生成し、酸素原子配位のDMSOがなくなる。今のところ、この原因は不明である。トリクロロ錯体は[PdCl_3(DMSO-S)]^-となってDMSOは硫黄原子で配位し、テトラクロロ錯体は生成しない。塩化物イオンの静電反発と配位原子のシグマドナー性、パイアクセプター性並びにトランス効果が配位構造を決定する要因となっている。

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  • Structure of solvent cluster and solvation steric effect at the transition state

    Grant number:10304057

    1998 - 2000

    System name:Grants-in-Aid for Scientific Research

    Research category:Grant-in-Aid for Scientific Research (A).

    Awarding organization:Japan Society for the Promotion of Science

    ISHIGURO Shin-ichi, UMEBAYASHI Yasuhiro

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    Grant amount:\28600000 ( Direct Cost: \28600000 )

    Organic solvent molecules coordinate to the metal ion to form solvation clusters in an aprotic donor solvent, and solvation steric effect operates between solvent molecules simultaneously coordinating to the metal ion. Solvation steric effect may also operate at the activated state of a complexation reaction in solution. The cobalt (II) ion forms a series of halogeno complexes in N, N-dimethylformamide (DMF) and N, N-dimethylacetamide (DMA). The cobalt (II) ion is four-coordinated in both [CoCl_3 (solvent)]^- and [CoCl_4]^<2->, and activation enthalpy and entropy values for reaction, [CoCl_3 (solvent)]^- + Cl^- = [CoCl_4]^<2->+ solvent, have been determined from temperature dependence of the reaction rate. The activation enthalpy play a decisive role in the reaction rate, and the rate become slower with increasing enthalpy of activation. By combining thermodynamic parameters at the ground state, the activation enthalpy for the reverse reaction was also obtained. It is concluded that solvation steric effect operates more strongly at the activated state, and its aspect is different from that at the ground state. In the above reaction, the five-coordinated [CoCl_4 (solvent)]^<2-> is formed. By using enthalpies of transfer of related species from DMF to DMA and those of activation in these solvents, the enthalpy of transfer of [CoCl^4 (solvent)]^<2-> from DMF to DMA was estimated to be 26 kJ mol^<-1>, and this indicating that the Co^<2+>-O (DMA) bond length become longer than the Co^<2+>-O (DMF) bond length. On the other hand, the decrease in the entropy of activation is smaller for DMA than DMF, indicating that the decrease in freedom of motion is smaller for DMA than DMF, probably owing to longer Co^<2+>-O (DMA) bond length than the Co^<2+>-O (DMF) bond length.

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  • Thermodynamics of Complex Formation in Micellar Solutions.

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    Grant type:Competitive

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  • Structue,Reactivity and Thermodynamics of Phosphatase Model Complexes

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    Grant type:Competitive

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  • Solvent Effect on Structure of Solvate Metal Ions in Mixed Solvents

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