Liquid crystalline tetrahedra and low-aspect ratio organic materials

被引：3

作者：

Pegenau, A ^{[1
]}

Goring, P ^{[1
]}

Diele, S ^{[1
]}

Tschierske, C ^{[1
]}

机构：

[1] Univ Halle Wittenberg, Inst Organ Chem, D-06120 Halle, Germany

来源：

LIQUID CRYSTALS: CHEMISTRY AND STRUCTURE | 1998年 / 3319卷

关键词：

thermotropic liquid crystal; phase segregation; carbohydrate derivative;

D O I：

10.1117/12.301254

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

3,4-Dialkoxybenzoates of pentaerythritol and structural related polyhydroxy compounds (glycerol, D-threitol, erythritol, adonitol and D-mannitol) have been synthesized! and investigated by polarizing microscopy, differential scanning calorimetry and some of them al so by X-ray scattering. Despite the fact that these compounds are neither anisometric nor amphiphilic in a classical sense they can display columnar liquid-crystalline phases. It is proposed, that the segregation of the polar regions and the lipophilic alkyl chains into separate regions is mainly responsible for the formation of these mesophases.

引用

页码：70 / 73

页数：4