Photoinduced deformation and isomerization of azobenzene liquid-crystalline polymer films at cryogenic temperature

被引：1

作者：

Ogikubo, Shunya ^{[1
]}

Hashimoto, Gaku ^{[1
]}

Ube, Toru ^{[2
]}

Suda, Masayuki ^{[3
]}

Yamamoto, Hiroshi ^{[3
]}

Ikeda, Tomiki ^{[2
,4
]}

机构：

[1] Chuo Univ, Grad Sch Sci & Engn, Bunkyo Ku, 1-13-27 Kasuga, Tokyo 1128551, Japan

[2] Chuo Univ, Res & Dev Initiat, Bunkyo Ku, 1-13-27 Kasuga, Tokyo 1128551, Japan

[3] Inst Mol Sci, Okazaki, Aichi 4448585, Japan

[4] Chinese Acad Sci, Tech Inst Phys & Chem, 29 Zhongguancun East Rd, Beijing 100190, Peoples R China

来源：

MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2018年 / 676卷 / 01期

关键词：

Azobenzene; Crosslinked liquid-crystalline polymer; Cryogenic temperature; Photoinduced bending; MECHANICAL-PROPERTIES; LIGHT; PHOTOISOMERIZATION; PHOTOCHEMISTRY; ACTUATORS; BEHAVIOR; SOLIDS;

D O I：

10.1080/15421406.2019.1595490

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We prepared 2 types of crosslinked liquid-crystalline polymers (CLCPs) (polyacrylates) with the same side-chain length but a different position of an azobenzene moiety in the side chain. We evaluated photoinduced deformation behavior of the CLCP films and photoisomerization behavior of azobenzene in the films at cryogenic temperature. Azobenzene moieties in both CLCP films showed no trans-cis isomerization and neither film exhibited bending behavior upon irradiation with UV light in liquid nitrogen [77 K]. On the other hand, when the film included azobenzene with a long spacer and a short tail, cis-trans isomerization of azobenzene and photoinduced deformation were observed in liquid nitrogen.

引用

页码：30 / 35

页数：6

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