SYNTHESIS AND THERMAL-PROPERTIES OF SIDE-CHAIN LIQUID-CRYSTALLINE POLY(GLYCIDYL ETHERS) WITH RACEMIC AND CHIRAL BACKBONE

被引：24

作者：

TATON, D

LEBORGNE, A

SPASSKY, N

NOEL, C

机构：

[1] UNIV PARIS 06, CNRS, URA 24, CHIM MACROMOLEC LAB, F-75252 PARIS 05, FRANCE

[2] ECOLE SUPER PHYS & CHIM IND VILLE PARIS, PHYSICOCHIM STRUCT & MACROMOLEC LAB, URA 278, F-75231 PARIS 05, FRANCE

来源：

MACROMOLECULAR CHEMISTRY AND PHYSICS | 1995年 / 196卷 / 09期

关键词：

D O I：

10.1002/macp.1995.021960918

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Oxiranes bearing a 4-cyanobiphenyl-4'-oxy mesogenic group with spacers of different length have been synthesized from glycidyl p-toluenesulfonate or epichlorohydrin (racemic or optically active). These monomers were polymerized with anionic initiators (CsOH, tBuOK (a))) or a chelate initiator (A1Et(3)/H2O/acetylacetone (a))). A transfer of chirality from the polymer backbone to the mesophase is observed for polyethers with a short spacer. A cholesteric phase is observed for the optically active polymer while the racemic polymer is nematic. Increasing the length of the spacer leads to a smectic mesophase. However, in that case, the effect of the chiral centre of the polymer backbone on the mesomorphous properties is not detected.

引用

页码：2941 / 2954

页数：14