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Kei Hashimoto

E-mail: 
hashimoto-kei-bj (at) ynu.ac.jp

Šw—π

 2007”N3ŒŽ Ž„—§–ƒ•z‚Z@‘²‹Ζ
 2011”N3ŒŽ “Œ‹ž‘εŠwHŠw•” ‰ž—p‰»Šw‰Θ@‘²‹Ζ
 2013”N3ŒŽ “Œ‹ž‘εŠw‘εŠw‰@ V—Μˆζ‘n¬‰ΘŠwŒ€‹†‰Θ@”ŽŽm‰Ϋ’φ‘OŠϊ@C—Ή
 2016”N3ŒŽ “Œ‹ž‘εŠw‘εŠw‰@ V—Μˆζ‘n¬‰ΘŠwŒ€‹†‰Θ@”ŽŽm‰Ϋ’φŒγŠϊ@C—Ή

E—π

 2015”N4ŒŽ-2016”N3ŒŽ “ϊ–{ŠwpU‹»‰ο“Α•ΚŒ€‹†ˆυiDC2j
 2016”N4ŒŽ-2017”N3ŒŽ ‰‘•l‘—§‘εŠw@HŠwŒ€‹†‰@@‰ΘŠwŒ€‹†”οŒ€‹†ˆυ
 2017”N4ŒŽ-@@@@@‰‘•l‘—§‘εŠw@HŠwŒ€‹†‰@@“Α”C‹³ˆυi•‹³j

ŠwˆΚ

”ŽŽmi‰ΘŠwjC“Œ‹ž‘εŠw (2016)
ŠwˆΚ˜_•Ά
w‹Οˆκ‚•ͺŽq–Τ–ΪƒCƒIƒ“ƒQƒ‹‚ΜŒ`¬‰ί’φ‰πΝ‚Ζ‚»‚Μ“ρŽ_‰»’Y‘f•ͺ—£–Œ‚Φ‚Μ‰ž—px  
" Gelation process of homogeneous polymer network iongel and application to CO2 separation membrane "





Publication list

Original papers

Google Scholar

25

"Direct Evidence for Li Ion Hopping Conduction in Highly Concentrated Sulfolane-Based Liquid Electrolytes"
Kaoru Dokko, Daiki Watanabe, Yosuke Ugata, Morgan L. Thomas, Seiji Tsuzuki, Wataru Shinoda, Kei Hashimoto, Kazuhide Ueno, Yasuhiro Umebayashi and Masayoshi Watanabe
J. Phys. Chem. B, in press (2018) [link]

24

"Ion Gel Network Formation in an Ionic Liquid Studied by Time-Resolved Small-Angle Neutron Scattering"
Kei Hashimoto, Kenta Fujii, Kengo Nishi and Mitsuhiro Shibayama
J. Phys. Chem. B, 122, 9419-9424 (2018) [link]

23

"Photo/thermoresponsive ABC triblock copolymer-based ion gels: photoinduced structural transitions"
Ryota Tamate, Ryoji Usui, Kei Hashimoto, Yuzo Kitazawa, Hisashi Kokubo and Masayoshi Watanabe
Soft Matter, in press (2018) [link]

22

"Cluster-Micelle Transition of a Thermo- and Photoresponsive ABC Triblock Copolymer in an Ionic Liquid"
AyaSaruwatari, Kei Hashimoto, Ryota Tamate, Ryoji Usui, Hisashi Kokubo and Masayoshi Watanabe
Aust. J. Chem., in press (2018) [link]

21

"Sulfonated Polyimide/Ionic Liquid Composite Membranes for CO2 Separation: Transport Properties in Relation to Their Nanostructures"
Akika Ito, Tomohiro Yasuda, Tetsuro Yoshioka, Akihiro Yoshida, Xiang Li, Kei Hashimoto, Kazukiyo Nagai, Mitsuhiro Shibayama, and Masayoshi Watanabe
Macromolecules, 51, 7112-7120 (2018) [link]

20

"Block copolymer self-assembly in ionic liquids"
Ryota Tamate, Kei Hashimoto, Takeshi Ueki, Masayoshi Watanabe
Phys. Chem. Chem. Phys., 20, 25123-25139 (2018) [link]

19

"Self-Healing Micellar Ion Gels Based on Multiple Hydrogen Bonding"
Ryota Tamate, Kei Hashimoto, Tatsuhiro Horii, Manabu Hirasawa, Xiang Li, Mitsuhiro Shibayama, Masayoshi Watanabe
Adv. Mater., 30, 1802792 (2018) [link]

18

"Small-angle X-ray scattering study on nano-scale structures controlled by water content in a binary water/ionic liquid system"
Kei Hashimoto, Kenta Fujii, Takumi Kusano, Kazu Hirosawa, Mitsuhiro Shibayama
Phys. Chem. Chem. Phys., 20, 18355-18360, (2018) [link]

17

"Controlled Sol-Gel Transitions of a Thermoresponsive Polymer in a Photoswitchable Azobenzene Ionic Liquid as a Molecular Trigger"
Caihong Wang, Kei Hashimoto, Ryota Tamate, Hisashi Kokubo, Masayoshi Watanabe
Angew. Chem. Int. Ed. Engl., 57, 227 (2018) [link]

16

"Magnesium bis(trifluoromethanesulfonyl)amide complexes with triglyme and asymmetric homologues: phase behavior, coordination structures and melting point reduction"
Kei Hashimoto, Soma Suzuki, Morgan L. Thomas, Toshihiko Mandai, Seiji Tsuzuki, Kaoru Dokko, Masayoshi Watanabe
Phys. Chem. Chem. Phys., 20, 7998 (2018) [link]

15

"Thermosensitive Phase Separation Behavior of Poly(benzyl methacrylate)/Solvate Ionic Liquid Solutions"
Yumi Kobayashi, Yuzo Kitazawa, Kei Hashimoto, Takeshi Ueki, Hisashi Kokubo, Masayoshi Watanabe
Langmuir, 33, 14105 (2017) [link]

14

"Solvated Structure of Cellulose in a Phosphonate-Based Ionic Liquid"
Kazu Hirosawa, Kenta Fujii, Kei Hashimoto, Mitsuhiro Shibayama
Macromolecules, 50, 6509 (2017) [link]

13

"Micellization/Demicellization Self-Assembly Change of ABA Triblock Copolymers Induced by a Photoswitchable Ionic Liquid with a Small Molecular Trigger"
Caihong Wang, Kei Hashimoto, Jiaheng Zhang, Yumi Kobayashi, Hisashi Kokubo, Masayoshi Watanabe
Macromolecules, 50, 5377 (2017) [link]

12

"Microscopic Structure of Solvated Poly(benzyl methacrylate) in an Imidazolium-Based Ionic Liquid: High-Energy X-ray Total Scattering and All-Atom MD Simulation Study"
Kenta Fujii, Takeshi Ueki, Kei Hashimoto, Yumi Kobayashi, Yuzo Kitazawa, Kazu Hirosawa, Masaru Matsugami, Koji Ohara, Masayoshi Watanabe, Mitsuhiro Shibayama
Macromolecules, 50, 4780 (2017) [link]

11

"A Polymer Electrolyte Containing Solvate Ionic Liquid with Increased Mechanical Strength Formed by Self-assembly of ABA-type Ionomer Triblock Copolymer"
Takayuki Kawazoe, Kei Hashimoto, Yuzo Kitazawa, Hisashi Kokubo, Masayoshi Watanabe
Electrochim. Acta, 235, 287 (2017) [link]

10

"Tetra-PEG Network Containing Ionic Liquid Synthesized via Michael Addition Reaction and Its Application to Polymer Actuator"
Shunta Ishii, Hisashi Kokubo, Kei Hashimoto, Satoru Imaizumi, Masayoshi Watanabe
Macromolecules, 50, 2906 (2017) [link]

9

"Effect of protonation on the solvation structure of solute N-butylamine in an aprotic ionic liquid"
Kei Hashimoto, Kenta Fujii, Koji Ohara, Mitsuhiro Shibayama
Phys. Chem. Chem. Phys., 19, 8194 (2017) [link]

8

"Nearly Ideal Polymer Network Ion Gel Prepared in pH-Buffering Ionic Liquid"
Kei Hashimoto, Kenta Fujii, Kengo Nishi, Takamasa Sakai, Mitsuhiro Shibayama
Macromolecules, 49, 344 (2016) [link]

7

"Microscopic Solvation Structure of Glucose in 1‑Ethyl-3methylimidazolium Methylphosphonate Ionic Liquid"
Kazu Hirosawa, Kenta Fujii, Kei Hashimoto, Yasuhiro Umebayashi, Mitsuhiro Shibayama
J. Phys. Chem. B., 119,
6262 (2015). [link]

6

"Gelation Mechanism of Tetra-Armed Poly(ethylene glycol) in Aprotic Ionic Liquid Containing Nonvolatile Proton Source, Protic Ionic Liquid"
Kei Hashimoto, Kenta Fujii, Kengo Nishi, Takamasa Sakai, Nobuko Yoshimoto, Masayuki Morita, Mitsuhiro Shibayama
J. Phys. Chem. B., 119, 4795 (2015). [link]

5

"Carbon Dioxide Separation Using a High-toughness Ion Gel with a Tetra-armed Polymer Network"
Kenta Fujii, Takashi Makino, Kei Hashimoto, Takamasa Sakai, Mitsuhiro Kanakubo, Mitsuhiro Shibayama
Chem. Lett., 44, 17 (2015). [link]

4

gWater-in-Ionic Liquid Microemulsion Formation in Solvent Mixture of Aprotic and Protic Imidazolium-Based Ionic Liquidsh
Takumi Kusano, Kenta Fujii, Kei Hashimoto, Mitsuhiro Shibayama
Langmuir, 30, 11890 (2014). [link]

3

"SANS and DLS Study of Tacticity Effects on Hydrophobicity and Phase Separation of Poly(N-isopropylacrylamide)"
Kengo Nishi, Takashi Hiroi, Kei Hashimoto, Kenta Fujii, Young-Soo Han, Tae-Hwan Kim, Yukiteru Katsumoto, Mitsuhiro Shibayama
Macromolecules, 46, 6225 (2013). [link]

2

gAcid-Base Property of Protic Ionic Liquid, 1-Alkylimidazolium Bis(trifluoromethanesulfonyl)amide Studied by Potentiometric Titrationh
Kei Hashimoto, Kenta Fujii, Mitsuhiro Shibayama
J. Mol. Liq., 188, 143 (2013). [link]

1

gBrønsted Basicity of Solute Butylamine in an Aprotic Ionic Liquid Investigated by Potentiometric Titrationh
Kenta Fujii, Kei Hashimoto, Takamasa Sakai, Yasuhiro Umebayashi, Mitsuhiro Shibayama
Chem. Lett., 42, 1250 (2013). [link]



‘ΰE‰πΰ

1

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–Œ, 43 93-100 (2018)