TRIPHENYLENE HEXA-N-ALKYLCYCLOHEXANOATES - A NEW SERIES OF DISK-LIKE LIQUID-CRYSTALS

被引：21

作者：

BEATTIE, DR

HINDMARSH, P

GOODBY, JW

HASLAM, SD

RICHARDSON, RM

机构：

[1] UNIV HULL,SCH CHEM,HULL HU6 7RX,N HUMBERSIDE,ENGLAND

[2] UNIV BRISTOL,SCH CHEM,BRISTOL BS8 1TS,AVON,ENGLAND

来源：

JOURNAL OF MATERIALS CHEMISTRY | 1992年 / 2卷 / 12期

关键词：

LIQUID CRYSTAL; DISCOTIC MESOPHASE;

D O I：

10.1039/jm9920201261

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：

A series of hexa-n-alkylcyclohexanoates of triphenylene were prepared by the esterification of hexahydroxytriphenylene with a variety of 4-n-alkylcyclohexylcarbonyl chlorides in the presence of pyridine. The liquid-crystalline phase behaviour of the materials synthesized was investigated by a combination of thermal polarized light microscopy, differential scanning calorimetry and X-ray diffraction. All of the compounds were found to exhibit a single discotic mesophase that had hexagonal symmetry. The hexagonal columnar phase was found to occur over much wider temperature ranges in this series than was observed for the aromatic analogues.

引用

页码：1261 / 1266

页数：6

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