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https://hdl.handle.net/10119/19977
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| Title: | Effect of Casting Solvent on Interfacial Molecular Structure and Proton Transport Characteristics of Sulfonated Polyimide Thin Films |
| Authors: | Nagao, Yuki
Krishnan, Karthik
Goto, Ryosuke
Hara, Mitsuo
Nagano, Shusaku |
| Keywords: | MAIRS
proton conductivity
surface morphology
molecular ordering
molecular orientation |
| Issue Date: | 2017-01-10 |
| Publisher: | Springer Nature |
| Magazine name: | Analytical Sciences |
| Volume: | 33 |
| Number: | 1 |
| Start page: | 35 |
| End page: | 39 |
| DOI: | 10.2116/analsci.33.35 |
| Abstract: | Two sulfonated polyimide (SPI) thin films were prepared with water and THF/water mixed solvents, respectively. The SPI thin film prepared with THF/water showed more than 5 times higher proton conductivity than that prepared with water mixed solvent at low relative humidity (RH) and 298 K. In this study, polarized optical microscopy (POM), grazing incidence small angle X-ray scattering (GISAXS), and p-polarized multiple angle incidence resolution spectrometry (pMAIRS) were carried out to investigate liquid crystalline (LC) optical ordered structure, organized structure, and molecular orientation. The molecular ordered parts using LC properties in the SPI thin films exhibited an almost identical structure under the low RH condition. On the other hand, the molecular orientation of the imide C=O groups in the non-ordered parts, which could not be detected by POM and GISAXS, showed different angles. The proton conductivity under low RH conditions is affected by the degree of the molecular orientation in the non-ordered parts of the SPI thin films. |
| Rights: | Copyright (c) 2017 The Japan Society for Analytical Chemistry. Yuki NAGAO, Karthik KRISHNAN, Ryosuke GOTO, Mitsuo HARA, Shusaku NAGANO, Analytical Sciences, 33(1), 2017, 35-39. This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature's AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: https://doi.org/10.2116/analsci.33.35 |
| URI: | https://hdl.handle.net/10119/19977 |
| Material Type: | author |
| Appears in Collections: | c10-1. 雑誌掲載論文 (Journal Articles)
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