手性丙烯酸酯液晶原位光聚合反应

IN-SITU PHOTOPOLYMERIZATION OF A CHIRAL LIQUID CRYSTAL ACRYLATE

手性丙烯酸酯液晶原位光聚合反应何流，张树范，金顺子，漆宗能，王佛松（中国科学院化学研究所北京１０００８０）关键词手性丙烯酸酯，原位光聚合，双折射，近晶相手性侧链液晶高分子显示近晶Ｓ！相，具有铁电性，在光电功能材料和非线性光学材料方面有潜在的应用前景’...

The effect of the smectic and isotropic phase on the photopolymerization of the chiral liquid crystal acrylate 4--acryloyloxyundecanloxy-4'-[thylbutyloxyl-biphenyl (monomer(I)) was studied using -FT--IR. In the meantime,the effect of temperature on the birefringence of surface-oriented monomer(I) andits polymer obtained by in-situ photopolymerization was investigated, too. The results show that the photopolymerization in the isotropic phase is conducted at ahigher rate than in the smectic phase when monomer conversion is less than 60%,however, the polymerization rate is independent of the initial phase state of themonomer when conversion is above 60gb,and the highly oriented liquid-crystallinepolyacrylate film can be prepared by in-situ photopolymerization of the surface-oriented chiral acrylate(I).