SYNTHESIS OF A GROUP OF MESOGEN JACKETED LIQUID CRYSTAL POLYMERS  

作　　者：朱兴隆 杨清传 周其风 

机构地区：[1]Chemistry Department, Peking University [2]The National Laboratory For Structural Chemistry of Unstable And Stable Species, Beijing, 100871

出　　处：《Chinese Journal of Polymer Science》1992年第2期187-194,共8页高分子科学（英文版）

摘　　要：A group of the mesogen jacketed liquid crystal polymers based on the monomers 2,5-bis (4-substituted benzoyl)oxystyrenes are synthesized. The substituents include alkoxy, alkyl, and cyano groups. The synthesis and the primary characterization of the liquid crystal phase of the monomers and the polymers are described. While some of the monomers give smectic textures the polymers are found to be nematic above their melting or glass transition temperatures. Interestingly the unsubstituted monomer and its polymer poly 2,5-di( benzoyloxy ) styrene are also liquid crystalline. The single crystal structure of one of the monomers is also discussed.A group of the mesogen jacketed liquid crystal polymers based on the monomers 2,5-bis (4-substituted benzoyl)oxystyrenes are synthesized. The substituents include alkoxy, alkyl, and cyano groups. The synthesis and the primary characterization of the liquid crystal phase of the monomers and the polymers are described. While some of the monomers give smectic textures the polymers are found to be nematic above their melting or glass transition temperatures. Interestingly the unsubstituted monomer and its polymer poly 2,5-di( benzoyloxy ) styrene are also liquid crystalline. The single crystal structure of one of the monomers is also discussed.

关 键 词：Mesogen jacketed liquid crystal polymers Rigid side chain liquid crystal polymers Liquid crystal monomers 2 5-Bis (4-alkoxybenzoyl) oxystyrene 2 5-Bis (4-alkylbenzoyl) oxystyrene 2 5-b is (4-cyanobenzoyl) oxystyrene 2 5-bis (4-cyanobenzoyl) ox 

分 类 号：O63[理学—高分子化学]