Synthesis and properties of photo-responsive liquid crystalline polyacetylene derivatives

被引：29

作者：

Goto, H

Akagi, K

Shirakawa, H

机构：

来源：

SYNTHETIC METALS | 1997年 / 84卷 / 1-3期

关键词：

polyacetylene and derivatives; transition-metal-catalyzed reactions; self-organization in macromolecules;

D O I：

10.1016/S0379-6779(97)80788-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

New crystalline conjugated polymer, poly(mono-substituted acetylene) was synthesized by introducing an azobenzene moiety as a mesogen core into side chain. Polymerization of the liquid crystal-substituted acetylene monomer was carried out using a Rh-based or Fe-based catalyst. Polarizing microscope studies demonstrated that the monomer exhibits a ''droplets'' texture characteristic of a nematic phase, and the polymer a polygonal texture assignable to a smectic phase. Photo-induced reversible cis-trans isomerization of the azobenzene moiety as well as thermal irreversible isomerization from cis to trans form of the polymer backbone were elucidated.

引用

页码：373 / 374

页数：2