摘要
首先通过重氮化反应合成了末端为羧基的刚性基元,再经过取代、加成、酯化反应最终合成了偶氮苯类聚硅氧烷液晶。通过UV表明其具有类似小分子的光致变性。并用POM、DSC对其液晶行为进行了表征,结果表明该化合物属于近晶A型液晶,相变区间为164.68℃～251.61℃,液晶范围较宽,有望作为光控开关和新型信息存储材料。
The rigid smecticunit containing carboxylic group was synthesized by diazotization, then liquid crystal polymer containing azobene group had been synthetized through substitution, addition and esterification reaction. UV showed that it had better photo-reversibility similar to micromolecule. Polarizing Microscopic Observations and Differential Scanning Calorimeter had been used to observe its liquid crystalline behavior, the results showed that it was smectic A with a wide temperature range from 191.04℃ to 274. 95℃, and will become a new type photocontrolable switch and information storage material.
出处
《化工新型材料》
CAS
CSCD
北大核心
2011年第11期112-114,共3页
New Chemical Materials
关键词
聚硅氧烷
偶氮苯
液晶
光致变色性
羧基
polysiloxane, azobene, liquid crystal, photochromism, carboxylic group
