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.
出处
《应用化学》
CAS
CSCD
北大核心
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 )
