Photoinduced bending and unbending behavior of liquid-crystalline gels and elastomers
Photoinduced bending and unbending behavior of liquid-crystalline gels and elastomers
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DOI：
10.1351/pac200476071467
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发表时间：
2004-07-01
影响因子：
1.8
通讯作者：
Ikeda, T
中科院分区：
文献类型：
--
作者：
Yu, YL;Nakano, M;Ikeda, T
通过含偶氮苯单体和偶氮苯交联剂的混合物的聚合制备了液晶凝胶和弹性体。取向的液晶凝胶和弹性体薄膜被发现进行各向异性弯曲和unbending行为只有沿着摩擦方向，当暴露于非偏振紫外光和可见光的交替照射。在多畴液晶弹性体薄膜的情况下，弯曲和不弯曲诱导正好沿着入射线偏振光的偏振方向。通过改变光的偏振方向，单个薄膜可以沿着沿着选定的方向反复精确地弯曲。
Liquid-crystalline gels and elastomers were prepared by polymerization of mixtures containing azobenzene monomers and cross linkers with azobenzene moieties. Oriented liquid-crystalline gels and elastomer films were found to undergo anisotropic bending and unbending behavior only along the rubbing direction, when exposed to alternate irradiation of unpolarized UV and visible light. In the case of polydomain liquid-crystalline elastomer films, the bending and unbending were induced exactly along the polarization direction of incident linearly polarized light. By altering the polarization direction of light, a single film could be bent repeatedly and precisely along any chosen direction.