首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Polysiloxane side-chain liquid crystalline polymers prepared by alkyne hydrosilylation
Authors:Wen Zhao  Bao-ping Lin  Xue-qin Zhang  Ying Sun  Hong Yang
Institution:School of Chemistry and Chemical Engineering, Jiangsu Province Hi-Tech Key Laboratory for Bio-medical Research ,Jiangsu Optoelectronic Functional Materials and Engineering Laboratory , Southeast University, Nanjing 211189, China
Abstract:We describe in this work an alkyne-hydrosilylation approach to synthesize a series of novel polysiloxane sidechain LCPs attaching end-on or side-on mesogenic side groups. Their properties are characterized by NMR, FTIR, gel permeation chromatography, thermogravimetric analysis, differential scanning calorimetry, polarized optical microscopy and small-angle X-ray scattering. These obtained alkenylsilane linked novel LCPs exhibit higher glass transition temperatures and clearing points, and especially display the tendency of forming smectic phases, in strong contrast with the nematic phases of their comparative conventional alkylsilane linked analogues, which manifests more rigid features of the alkenylsilane linkages and their significant influence on the mesomorphic properties.
Keywords:Liquid crystalline polymer  Polysiloxane  Alkyne hydrosilylation
本文献已被 CNKI 万方数据 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号