Photoinduced Bending Behavior of Cross-linked Azobenzene Liquid-Crystalline Polymer Films with a Poly(oxyethylene) Backbone
Photoinduced Bending Behavior of Cross-linked Azobenzene Liquid-Crystalline Polymer Films with a Poly(oxyethylene) Backbone
复制标题
聚氧乙烯骨架交联偶氮苯液晶聚合物薄膜的光致弯曲行为
DOI：
10.1002/marc.201400112
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发表时间：
2014-07-01
影响因子：
4.6
通讯作者：
Yu, Yanlei
中科院分区：
文献类型：
--
作者：
Lv, Jiu-an;Wang, Weiru;Yu, Yanlei
通过光引发阳离子共聚合成了具有聚氧乙烯骨架的交联偶氮苯液晶聚合物薄膜。薄膜表面朝向光源的偶氮苯部分在光聚合过程中同时用非偏振 436 nm 光进行光配向，从而在整个薄膜中形成张开配向。当一张薄膜的不同表面面对紫外光照射时，所制备的薄膜表现出可逆的光致弯曲行为，弯曲方向相反。
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.