HYDROXY-FUNCTIONALIZED LIQUID-CRYSTALLINE POLYAZOMETHINES .1. SYNTHESIS, CHARACTERIZATION AND STRUCTURE-MESOGENIC BEHAVIOR RELATIONSHIP

被引：42

作者：

BARBERA, J ^{[1
]}

ORIOL, L ^{[1
]}

SERRANO, JL ^{[1
]}

机构：

[1] UNIV ZARAGOZA,CSIC,FAC CIENCIAS,INST CIENCIA MAT ARAGON,DEPT QUIM ORGAN,E-50009 ZARAGOZA,SPAIN

来源：

LIQUID CRYSTALS | 1992年 / 12卷 / 01期

关键词：

D O I：

10.1080/02678299208029036

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A new series of polyazomethines based on hydroxy-functionalized mesogenic units has been synthesized and characterized. Different structural variations have been checked in order to obtain mesogenic polyazomethines with low melting temperatures and a broad nematic range. Completely conjugated mesogenic units with a lateral substituent or alteration of coaxiality are shown to be the most suitable structural variations. No mesogenic behaviour was observed for polyazomethines with a flexible mesogenic core due to unfavourable conformational equilibrium. Polyazomethines have complex thermal behaviour and show an increase in the degree of polymerization on annealing.

引用

页码：37 / 47

页数：11

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