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http://hdl.handle.net/10119/19046
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| Title: | Cross-linkable Sulfonated Polyimide Thin Film With High Proton Conductivity |
| Authors: | Yao, Yuze
Hara, Mitsuo
Nagano, Shusaku
Aoki, Kentaro
Nagao, Yuki |
| Issue Date: | 2024 |
| Publisher: | University of Montpellier |
| Magazine name: | Conference Proceedings of STEPI-12 |
| Volume: | 12 |
| Start page: | 49 |
| End page: | 59 |
| Abstract: | Sulfonated semi-alicyclic polyimides have issues with poor mechanical and chemical stability in water. As described herein, we synthesized a new sulfonated semi-alicyclic polyimide composed of bicyclo[2.2.2]oct-7-ene-2,3,5,6-tetracarboxylic dianhydride (BOEDA) and 3,3'- bis-(sulfopropoxy)-4,4'-diaminobiphenyl (BSPA), of which the contained dienophile structure can undergo Diels–Alder (D-A) reaction. Facile cross-linking reaction was conducted via Fe3+- catalyzed D-A reaction between BSPA-BOEDA and silica nanoparticles (NPs) modified by (3-cyclopentadienylpropyl) triethoxyslane (CPTS). Compared with BSPA-BOEDA, the cross-linked BSPA-BOEDA-NP membrane and its thin film showed better stability in water. Humiditycontrolled grazing incidence X-ray scattering (GIXRS) revealed that an isotropic phase segregation of 2 nm-1 formed in both BSPA-BOEDA and BSPA-BOEDA-NP thin films. The BSPABOEDA and BSPA-BOEDA-NP thin films exhibited high proton conductivity of 4 × 10-2 S cm-1 and 1 × 10-2 S cm-1, respectively, under 25 °C and 95% relative humidity (RH). |
| Rights: | This paper is posted here with permission of University of Montpellier. Copyright (C) 2024 University of Montpellier. Conference Proceedings of STEPI-12, 2023, 12, pp. 49-59. |
| URI: | http://hdl.handle.net/10119/19046 |
| Material Type: | author |
| Appears in Collections: | c11-1. 会議発表論文 (Conference Papers)
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| Y-NAGAO-M-0602.pdf | | 688Kb | Adobe PDF | View/Open |
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