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Please use this identifier to cite or link to this item: http://hdl.handle.net/10119/15729

Title: Proton-Conductivity Enhancement in Polymer Thin Films
Authors: Nagao, Yuki
Keywords: Interface
Oriented structure
Substrate dependence
thickness dependence
Organized structure
Issue Date: 2017-07-28
Publisher: American Chemical Society
Magazine name: Langmuir
Volume: 33
Number: 44
Start page: 12547
End page: 12558
DOI: 10.1021/acs.langmuir.7b01484
Abstract: Highly proton-conductive polymers have long attracted the attention of researchers for use in energy conversion, sensors, catalysts, and other applications. From the viewpoint of scientific history of creation of highly proton-conductive polymers, one fundamental approach is based on the strategy of phase-segregated structures with strong acid groups. This Feature Article presents a new approach to enhance the proton conductivity of the polymer thin films using an interface that can modify the degrees of freedom for a polymer structure through interaction between the substrate surface and polymers. The author introduces suppressed proton conductivity in Nafion thin films and then specifically examines the enhancement of proton conductivity by the molecular orientation in the polymers. As the last topic, the highly proton-conductive organized polyimide thin film is demonstrated using the lyotropic liquid-crystal property. Both molecular ordering and the in-plane oriented structure can enhance proton conductivity. Moreover, the optical domain and degree of the molecular ordering derived from the molecular weight can contribute strongly to the proton transport property.
Rights: Yuki Nagao, Langmuir, 2017, 33(44), pp.12547-12558. This document is the unedited author's version of a Submitted Work that was subsequently accepted for publication in Langmuir, copyright (c) American Chemical Society after peer review. To access the final edited and published work, see http://dx.doi.org/10.1021/acs.langmuir.7b01484
URI: http://hdl.handle.net/10119/15729
Material Type: author
Appears in Collections:c10-1. 雑誌掲載論文 (Journal Articles)

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