含偶氮基团的弯曲型分子的光谱特性研究

董寅; 沈冬; 郑致刚

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含偶氮基团的弯曲型分子的光谱特性研究

材料物理和化学 | 更新时间：2020-08-12

- 含偶氮基团的弯曲型分子的光谱特性研究
- Spectral Characteristics of Bent-Core Azobenzen Monomers
- 液晶与显示 2012年27卷第1期页码：14-20
- 作者机构：
  
  华东理工大学理学院化学物理研究室上海,200237
- 作者简介：
- 基金信息：
  
  国家自然科学基金(No.60878047, No.61108065)()
- DOI：
  中图分类号： O753+.2
- 收稿日期：2011-11-29，
  
  修回日期：2011-12-07，
  
  网络出版日期：2012-02-15，
  
  纸质出版日期：2012-02-15
- 稿件说明：
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董寅, 沈冬, 郑致刚. 含偶氮基团的弯曲型分子的光谱特性研究[J]. 液晶与显示, 2012,27(1): 14-20

DONG Yin, SHEN Dong, ZHENG Zhi-gang. Spectral Characteristics of Bent-Core Azobenzen Monomers[J]. , 2012,27(1): 14-20
董寅, 沈冬, 郑致刚. 含偶氮基团的弯曲型分子的光谱特性研究[J]. 液晶与显示, 2012,27(1): 14-20 DOI：

DONG Yin, SHEN Dong, ZHENG Zhi-gang. Spectral Characteristics of Bent-Core Azobenzen Monomers[J]. , 2012,27(1): 14-20 DOI：

摘要

偶氮连接基团(N=N)有着特殊的热化学和光化学行为

在适当波长光的照射下

能发生可逆的顺反异构反应

从而发生吸收波长的变化。在分子设计、光定位、光致变色和热致变色等方面

偶氮连接基团的非线性光化学性质都有着潜在的应用价值。文章以含有偶氮基作为侧翼的弯曲型分子作为研究对象

比较了弯曲型和直线型分子的吸收光谱;并用计算机模拟计算了弯曲型分子的角度

发现分子弯曲角和紫外可见吸收光谱存在着密切的关系。

Abstract

The azo (N=N) linkage has the particular thermochemistry and actinoche-mistry behavior

the azobenzene group can undergo reversible cis-trans isomerization under light irradiation and its nonlinear optical properties possess the potential applications in the aspects of molecular design

photofixation

photochromics

thermochromism

etc. The UV-Vis absorbance of sixteen bent-core or linear monomers containing azobenzene as side arms and substituted para/m-aminobenzoic acid as central units was studied. The angle of the bent-core molecules was simulated. The trans-form of azo compounds showed a strong band in the UV region (330~370 nm) and a weak band at 440~450 nm. It was found that it has a close relationship between the angle of the molecules and the UV-Vis absorption.

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references

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