Synthesis and Mesogenic Behaviours of 1-Bromo-&omega;-(4-methoxyazobenzene- 4'-oxy) Alkans

HE Chang-hai; ZHANG Chao-can

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Synthesis and Mesogenic Behaviours of 1-Bromo-ω-(4-methoxyazobenzene- 4'-oxy) Alkans

Material Physics & Chemistry | 更新时间：2020-08-12

- Synthesis and Mesogenic Behaviours of 1-Bromo-ω-(4-methoxyazobenzene- 4'-oxy) Alkans
- Chinese Journal of Liquid Crystals and Displays Vol. 25, Issue 5, Pages: 617-621(2010)
- 作者机构：
  
  1. 武汉理工大学材料科学与工程学院, 湖北武汉 430070,E-mail:hechanghai63@163. com
  2. 湖北轻工职业技术学院, 湖北武汉 430070
- 作者简介：
- 基金信息：
- DOI：
  CLC： O753+.2
- Received：09 April 2010，
  
  Revised：05 May 2010，
  
  Published Online：28 September 2010，
  
  Published：20 October 2010
- 稿件说明：
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贺昌海, 张超灿. ω-(4-甲氧基-4'-偶氮苯氧)溴代烷的制备及液晶性能的研究[J]. 液晶与显示, 2010,25(5): 617-621

HE Chang-hai, ZHANG Chao-can. Synthesis and Mesogenic Behaviours of 1-Bromo-ω-(4-methoxyazobenzene- 4'-oxy) Alkans[J]. 液晶与显示, 2010,25(5): 617-621
贺昌海, 张超灿. ω-(4-甲氧基-4'-偶氮苯氧)溴代烷的制备及液晶性能的研究[J]. 液晶与显示, 2010,25(5): 617-621 DOI：

HE Chang-hai, ZHANG Chao-can. Synthesis and Mesogenic Behaviours of 1-Bromo-ω-(4-methoxyazobenzene- 4'-oxy) Alkans[J]. 液晶与显示, 2010,25(5): 617-621 DOI：

摘要

偶氮苯及其衍生物是性能良好的介晶基团

含偶氮苯的分子有广泛的用途。文章报道了

-(4-甲氧基-4'-偶氮苯氧)溴代烷(ZO

亚甲基数n为

2~6)的制备

所合成化合物的结构由红外光谱分析(IR)和核磁共振(

H NMR)测试确定。示差扫描量热(DSC)测试及偏光显微镜(POM)观察显示

产物ZO2未表现出液晶性

ZO3显双向液晶性

呈近晶相;ZO4、ZO5、ZO6呈单向液晶性

为向列相。它们的织构随

的增大而逐渐改善

ZO6的偏光织构最完善。

Abstract

Azobenzene and its derivatives are widely used mesogenic groups. In this paper

1-bromo-

-(4-methoxyazobenzene-4'-oxy)alkanes(ZO

) have been synthesized in which the number of methylene unit varies from 2 to 6. The structures of the synthesized compounds were confirmed by IR and

H NMR spectroscopy. The differential scanning calorimetry (DSC) measurement and polarizing optical macroscope (POM) observation showed that the resulting compounds exhibited thermotropic liquid crystalline mesomophism except for ZO2. ZO3 displayed semectic phase

and ZO4

ZO5 and ZO6 showed nematic phase. The texts pattern became more perfect with the increase of methylene number.

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references

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Synthesis and Mesogenic Behaviours of 1-Bromo-ω-(4-methoxyazobenzene- 4'-oxy) Alkans

DOI：

摘要

Abstract

关键词

Keywords

references