A novel soluble Azo polyimide and its application as liquid crystal photo-alignment layer

被引：0
作者：
Jang, M [1 ]
Yu, HF [1 ]
He, YN [1 ]
Lian, YQ [1 ]
Wang, XG [1 ]
机构：
[1] Tsing Hua Univ, Dept Chem Engn, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
来源：
ACTA POLYMERICA SINICA | 2004年 / 03期
关键词：
Azo polyimide; soluble; liquid crystal display; alignment layer; photo-induced;
D O I：
暂无
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
A novel soluble photosensitive azo polyimide was synthesized from 4,4'-di(1,2-anhydride-4-carboxylate) azobenzene and 4, 4'-diamino-4"-hexadecyloxy triphenylmethane through a polyimidization reaction. The structure and properties of the obtained polyimide were characterized by using (1H-NMR.) DSC, FTIR and UV-Vis spectroscopy. The polymer showed significant photochromic effect upon UV irradiation due to the cis-trans photoisomerization. It was observed that the thin films of the polymer, after being irradiated with linearly polarized UV light and assembled in LC cells as alignment layers, could induce uniaxial homogenous orientation of nematic LC molecules.
引用
收藏
页码：321 / 326
页数：6
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