Non-symmetric liquid crystal dimers containing the 4-nitrobenzohydrazide group: synthesis and mesomorphic behaviour

被引：19

作者：

Bai, Binglian ^{[1
,2
]}

Wang, Haitao ^{[1
]}

Zhang, Peng ^{[1
]}

Qu, Songnan ^{[1
]}

Li, Fan ^{[1
]}

Yu, Zhixin ^{[1
]}

Long, Beihong ^{[1
]}

Li, Min ^{[1
]}

机构：

[1] Jilin Univ, Inst Mat Sci & Engn, Minist Educ, Key Lab Automobile Mat JLU, Changchun 130012, Peoples R China

[2] Jilin Univ, Coll Phys, Changchun 130023, Peoples R China

来源：

LIQUID CRYSTALS | 2008年 / 35卷 / 07期

基金：

美国国家科学基金会;

关键词：

liquid crystal dimers; hydrogen bonding; hydrazide; derivatives; azobenzene;

D O I：

10.1080/02678290802187264

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The synthesis and mesomorphic behaviour are reported of a new series of dimers containing 4-nitrobenzohydrazide and azobenzene groups as the mesogenic units. These non-symmetric liquid crystal dimers are found to exhibit a monolayer smectic A phase (SmA(1)). Lateral hydrogen bonding and strong dipole-dipole interactions are shown to be the major driving forces for the formation of the SmA1 phase. The present study indicates that the intermolecular interactions and thus the mesophase morphology of the liquid crystal dimers can be controlled by the appropriate selection of the molecular fragments capable of forming H-bonds.

引用

页码：793 / 798

页数：6

共 26 条

[1] Liquid crystalline properties of salicylaldimine-based dimers:: influence of terminal alkyl chain length and central part [J].