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Photo/thermoresponsive ABC triblock copolymer-based ion gels: photoinduced structural transitions
http://hdl.handle.net/10131/00012092
http://hdl.handle.net/10131/0001209206d28379-3d2c-42d8-93fc-df637ac6153d
名前 / ファイル | ライセンス | アクション |
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C8SM01578C.pdf (4.4 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2018-12-12 | |||||
タイトル | ||||||
タイトル | Photo/thermoresponsive ABC triblock copolymer-based ion gels: photoinduced structural transitions | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題 | THIN-FILM TRANSISTORS, POLYMER, LIQUID, HYDROGELS, MICELLIZATION, SPECTROSCOPY, RELAXATION, CHALLENGES, MORPHOLOGY, RHEOLOGY | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
Tamate, Ryota
× Tamate, Ryota× Usui, Ryoji× Hashimoto, Kei× Kitazawa, Yuzo× Kokubo, Hisashi× Watanabe, Masayoshi |
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著者所属 | ||||||
Department of Chemistry and Biotechnology, Yokohama National University | ||||||
著者所属 | ||||||
Department of Chemistry and Biotechnology, Yokohama National University | ||||||
著者所属 | ||||||
Department of Chemistry and Biotechnology, Yokohama National University | ||||||
著者所属 | ||||||
Yokohama Natl Univ, Dept Chem & Biotechnol | ||||||
著者所属 | ||||||
Department of Chemistry and Biotechnology, Yokohama National University | ||||||
著者所属 | ||||||
Department of Chemistry and Biotechnology, Yokohama National University | ||||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | A photo/thermoresponsive ABC triblock copolymer-based ion gel exhibiting photoinduced structural transitions accompanied by significant rheological changes is newly developed. The ABC triblock copolymer comprises an ionic liquid (IL)-phobic A block, an IL-philic B block, and a photo/thermoresponsive C block containing azobenzene moieties. The IL-phobic A block forms a rigid micellar core in an IL over a wide temperature range and the photo/thermoresponsive C block undergoes upper critical solution temperature (UCST)-type phase transition in ILs. In concentrated polymer solution, the ABC triblock copolymer can form a percolated micellar network at low temperatures through aggregation of A and C blocks as physical crosslinks, bridged by IL-philic B blocks. In contrast, the ion gel undergoes structural transition to jammed micelles at high temperatures due to the disassembly of the thermoresponsive C block, resulting in significant softening of the ion gel. Importantly, the temperature dependences of the viscoelastic properties of the ion gel differ drastically depending on photo-irradiation conditions as the photoinduced isomerization of azobenzene moieties in the C block modulates the affinity between the polymer chain and IL. Utilizing this feature, photoinduced softening/hardening of the ion gel is realized at constant temperature. This study provides a promising strategy to control the rheological properties of nonvolatile soft materials via contactless light irradiation that could be exploited in various applications such as photoresponsive soft actuators and photo-healable soft materials. | |||||
書誌情報 |
SOFT MATTER 巻 14, p. 9088-9095, 発行日 2018-12-05 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1744683X | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1039/c8sm01578c | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||
出版者 | ||||||
出版者 | Royal Society of Chemistry |