Photoinduced Bending Behavior of Cross-linked Azobenzene Liquid-Crystalline Polymer Films with a Poly(oxyethylene) Backbone

被引:28
|
作者
Lv, Jiu-an [1 ,2 ]
Wang, Weiru [3 ]
Xu, Jixiang [1 ,2 ]
Ikeda, Tomiki [4 ]
Yu, Yanlei [1 ,2 ]
机构
[1] Fudan Univ, Dept Mat Sci, Shanghai 200433, Peoples R China
[2] Fudan Univ, State Key Lab Mol Engn Polymers, Shanghai 200433, Peoples R China
[3] Tokyo Inst Technol, Chem Resources Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan
[4] Chuo Univ, Res & Dev Initiat, Bunkyo Ku, Tokyo 1128551, Japan
基金
中国国家自然科学基金;
关键词
azobenzene; liquid-crystalline polymers; photoinduced bending; photoinitiated cationic polymerization; LIGHT-INDUCED DEFORMATION; PHOTOMECHANICAL RESPONSE; UNBENDING BEHAVIOR; MAIN-CHAIN; ELASTOMERS; ACTUATORS; GLASSY; DRIVEN; PHOTODRIVEN; GELS;
D O I
10.1002/marc.201400112
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Cross-linked azobenzene liquid-crystalline polymer films with a poly(oxyethylene) backbone are synthesized by photoinitiated cationic copolymerization. Azobenzene moieties in the film surface toward the light source are simultaneously photoaligned during photopolymerization with unpolarized 436 nm light and thus form a splayed alignment in the whole film. The prepared films show reversible photoinduced bending behavior with opposite bending directions when different surfaces of one film face to ultraviolet light irradiation.
引用
收藏
页码:1266 / 1272
页数:7
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