Faculty of Engineering, Division of Materials Science and Chemical Engineering


Specially Appointed Research Associate

Research Fields, Keywords

Ionic Liquid, Polymer, Gel, Analytical Chemistry, Light Scattering

Mail Address

E-mail address


Graduating School 【 display / non-display

  • 2007.04

    The University of Tokyo   Faculty of Engineering   Department of Applied chemistry   Graduated

Graduate School 【 display / non-display

  • 2011.04

    The University of Tokyo  Graduate School of Frontier Sciences  Department of Advanced Material Sciences  Doctor Course  Completed

Degree 【 display / non-display

  • Docter(Science) -  The University of Tokyo

  • Master(Science) -  The University of Tokyo

Field of expertise (Grants-in-aid for Scientific Research classification) 【 display / non-display

  • Basic chemistry

  • Polymer/Textile materials

Qualification acquired 【 display / non-display

  • Usual Car License (AT limitation)


Thesis for a degree 【 display / non-display

  • Gelation process of homogeneous polymer network iongel and application to CO2 separation membrane

    Kei Hashimoto 


    Doctoral Thesis   Single Work

Papers 【 display / non-display

  • Effect of ionic liquid structure on viscoelastic behavior of hydrogen-bonded micellar ion gels

    Ryota Tamate, Kei Hashimoto, Xiang Li, Mitsuhiro Shibayama, Masayoshi Watanabe

    Polymer ( Elsevier )  178   121694   2019.08  [Refereed]

    Joint Work


  • Role of Cation Structure in CO2 Separation by Ionic Liquid/Sulfonated Polyimide Composite Membrane

    Eri Hayashi, Kei Hashimoto, Morgan L. Thomas, Seiji Tsuzuki, Masayoshi Watanabe

    Membranes     2019.07  [Refereed]  [Invited]

    Joint Work


  • Application of protic ionic liquids to CO2 separation in a sulfonated polyimide-derived ion gel membrane

    Eri Hayashi, Morgan L. Thomas, Kei Hashimoto, Seiji Tsuzuki, Akika Ito, Masayoshi Watanabe

    ACS Applied Polymer Materials ( American Chemical Society )    2019.05  [Refereed]

    Joint Work


  • Solvation Structure of Poly(benzyl methacrylate) in a Solvate Ionic Liquid: Preferential Solvation of Li-Glyme Complex Cation

    Kei Hashimoto, Yumi Kobayashi, Hisashi Kokubo, Takeshi Ueki, Koji Ohara, Kenta Fujii, Masayoshi Watanabe

    The Journal of Physical Chemistry B ( American Chemical Society )  123 ( 18 )   4098 - 4107   2019.04  [Refereed]

    Joint Work


  • Polymer electrolytes based on a homogeneous poly(ethylene glycol) network and their application to polymer actuators

    Ryosuke Shioiri, Hisashi Kokubo, Tatsuhiro Horii, Yumi Kobayashi, Kei Hashimoto, Kazuhide Ueno, Masayoshi Watanabe

    Electrochimica Acta ( Elsevier )  298   866 - 873   2018.12  [Refereed]

    Joint Work


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Review Papers 【 display / non-display

  • Block copolymer self-assembly in ionic liquids

    Ryota Tamate, Kei Hashimoto, Takeshi Ueki, Masayoshi Watanabe

    Physical Chemistry Chemical Physics ( Royal Society of Chemistry )  20 ( 39 ) 25123 - 25139   2018.08  [Refereed]  [Invited]

    Introduction and explanation (scientific journal)   Joint Work