Modifications of the mesophase formation of discotic triphenylene compounds by substituents

被引：41

作者：

Kettner, A

Wendorff, JH ^{[1
]}

机构：

[1] Univ Marburg, Inst Chem Phys, D-35032 Marburg, Germany

[2] Univ Marburg, Ctr Mat Sci, D-35032 Marburg, Germany

来源：

LIQUID CRYSTALS | 1999年 / 26卷 / 04期

关键词：

D O I：

10.1080/026782999204912

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Columnar discotic carboxylic esters of 2-hydroxy-3,6,7,10,11-penta(1-pentyloxy) triphenylene, characterized by a variety of functional groups, were prepared with the purpose of studying the effects of the substituents on the mesophase behaviour. Bulky substituents and polar substituents were found to destabilize the columnar mesophase. The clearing temperature is lowered and the melting point of the crystalline phase, as well as the tendency to crystallize from the mesophase. is increased. Specific substituents cause the formation of novel discotic mesophases characterized by a superstructure.

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页码：483 / 487

页数：5

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