由联苯酚双肉桂酸酯制备光控取向膜  

Preparation of Light Controllable Films from Photosensitive Cinnamates

作　　者：张春华[1] 杨正华[1] 丁孟贤[1] 于涛[2] 彭增辉[2] 宣丽[2] 

机构地区：[1]高分子物理与化学国家重点实验室,中国科学院长春应用化学研究所,长春130022 [2]中国科学院长春光学精密机械与物理研究所

出　　处：《应用化学》2002年第8期715-718,共4页Chinese Journal of Applied Chemistry

基　　金：国家自然科学基金重点资助项目 (50 0 330 1 0 )

摘　　要：通过光敏小分子的光交联反应制备了光控取向膜 ,研究了光照时间对取向膜红外二向色性的影响及光照角度对预倾角的影响 ,并在偏光显微镜下观察了液晶的排列织构。结果表明 ,光照 15 min时 ,红外二向色性比值 D达最大 ,液晶排列最均匀。光照角度对该膜的预倾角影响不大。Light controllable films were prepared by photopolymerization and crosslinking reaction of 4,4 diphenol dicinnamic ester. The effects of exposure time of polarized UV light on the IR dichroism of film and that of illumination light angle on the pretilt angle of liquid crystal obtained have been investigated . The texture alignment of the liquid crystal has been observed by a polarized microscope. The results showed that the film exhibited a maximum IR dichroism ratio and best uniform liquid crystal alignment under UV light illumination for 15 min.

关 键 词：联苯酚双肉桂酸酯 光敏小分子 光控取向膜 红外二色性 液晶分子 织构 液晶显示器 膜材料 

分 类 号：TN104.3[电子电信—物理电子学]