Cinnamate-functionalized hyperbranched polymer as liquid crystal photo-alignment layer  

作　　者：Bin Jun Shen Zheng Xie Ya Ning He Yan Qing Lian 

机构地区：[1]Institute of Polymer Research, Department of Chemical Engineering, Laboratory of Advanced Materials, Tsinghua University, Beijing 100084, China

出　　处：《Chinese Chemical Letters》2008年第9期1131-1134,共4页中国化学快报（英文版）

基　　金：the National Natural Science Foundation of China (No. 50103005);Thanks for Professor Shi Wenfang of University of Science and Technology of China to supply the hyperbranched polymer(H30).

摘　　要：In this work, 4-methoxylcinnamoyl chloride was reacted with a commercial hyperbranched polymer （Boltom-TM H30） to prepare a hyperbranched photosensitive polymer （H30-Ci）. The polymer was characterized by UV absorption spectrum and 1H- NMR spectrum. After processed by Linearly Polarized Polymerization （LPP） method, the spin-coated films of H30-Ci were used as photo-alignment layers to assemble liquid crystal （LC） cells containing nematic liquid crystal （5CB）. The observation by polarized microscope showed that the H30-Ci blended with a linear polymer （BP-AN-Ci） photo-alignment layers could align LC molecules in a very uniform way.In this work, 4-methoxylcinnamoyl chloride was reacted with a commercial hyperbranched polymer （Boltom-TM H30） to prepare a hyperbranched photosensitive polymer （H30-Ci）. The polymer was characterized by UV absorption spectrum and 1H- NMR spectrum. After processed by Linearly Polarized Polymerization （LPP） method, the spin-coated films of H30-Ci were used as photo-alignment layers to assemble liquid crystal （LC） cells containing nematic liquid crystal （5CB）. The observation by polarized microscope showed that the H30-Ci blended with a linear polymer （BP-AN-Ci） photo-alignment layers could align LC molecules in a very uniform way.

关 键 词：Hyperbranched polymer Photo-alignment layer Linearly polarized polymerization （LPP） Liquid crystal display 

分 类 号：TQ245.12[化学工程—有机化工] TQ342.2