| アイテムタイプ |
共通アイテムタイプ(1) |
| 公開日 |
2025-01-31 |
| タイトル |
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タイトル |
Liquid-Crystalline Photonic Sandwich: Electroresponsive Colloids of Clay Nanosheets Loading Photofunctional Dyes |
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言語 |
en |
| 著者 |
中戸, 晃之
Watanabe, Tsuyoshi
Harada, Takumi
Shintaku, Mahito
毛利, 恵美子
Tani, Seiji
Suzuki, Yasutaka
Miyata, Hirokatsu
Breu, Josef
Kawamata, Jun
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| 著作権関連情報 |
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|
権利情報 |
Copyright (c) 2024 The Authors. Published by American Chemical Society |
| 著作権関連情報 |
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権利情報Resource |
https://creativecommons.org/licenses/by-nc-nd/4.0/ |
|
権利情報 |
This article is licensed under CC-BY-NC-ND 4.0 |
| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
Colloidal clay nanosheets obtained by the delamination of layered crystals of smectite-type clay minerals in water form liquid crystals because of their shape anisotropy. Loading of organic dyes onto the liquid crystalline clay nanosheets will enable novel photonic materials, where photofunctions of the loaded dye are controlled by the liquid crystallinity of the clay nanosheets. However, adsorption of organic dyes onto the nanosheets renders the nanosheet surfaces hydrophobic, and consequently, colloidal stability of the nanosheets is lost. In this study, this drawback is overcome by sandwiching cationic stilbazolium dyes between a pair of synthetic fluorohectorite nanosheets. This is realized by the preparation of stilbazolium–clay second-stage intercalation compounds characterized by intercalation of dye cations into every other interlayer space of the hectorite clay, where nonintercalated interlayer spaces are occupied by Na+ ions. The second-stage intercalation compounds are obtained by partial ion exchange of mother clay mineral incorporating Na+ ions in all of the interlayer spaces and delaminated from the Na+-containing interlayer spaces to form clay nanosheets sandwiching the dye molecules. Aqueous colloids of the dye-sandwiching clay nanosheets form colloidal liquid crystals, and the dye-sandwiching liquid crystalline clay nanosheets respond to an applied AC electric field to be aligned parallel to the electric field. The assembled structure of the dye-sandwiching clay nanosheets under the electric field is characterized by aligned discrete clay platelets, which is somewhat different from that of a colloidal liquid crystal of clay nanosheets without dye loading characterized by macroscopic liquid crystalline domains up to submillimeters. The electric alignment of the clay nanosheets induces alteration of light absorption of the sandwiched stilbazolium molecules, which verifies a strategy of constructing stimuli-responsive photonic materials of clay–organic hybrids. |
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言語 |
en |
| 書誌情報 |
en : Langmuir
巻 40,
号 34,
p. 18297-18304,
発行日 2024-08-12
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| 出版社 |
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出版者 |
American Chemical Society |
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言語 |
en |
| 言語 |
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|
言語 |
eng |
| 資源タイプ |
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|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 出版タイプ |
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出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| DOI |
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識別子タイプ |
DOI |
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|
関連識別子 |
https://doi.org/10.1021/acs.langmuir.4c02246 |
| ISSN |
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収録物識別子タイプ |
PISSN |
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収録物識別子 |
0743-7463 |
| ISSN |
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収録物識別子タイプ |
EISSN |
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収録物識別子 |
1520-5827 |
| 査読の有無 |
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値 |
yes |
| 研究者情報 |
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|
URL |
https://hyokadb02.jimu.kyutech.ac.jp/html/122_ja.html |
| 研究者情報 |
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|
URL |
https://hyokadb02.jimu.kyutech.ac.jp/html/100000325_ja.html |
| 論文ID（連携） |
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|
値 |
10444196 |
| 連携ID |
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|
値 |
12615 |
10444196.pdf (12.9 MB)
