文献类型：期刊文献

中文题名：含偶氮基团的弯曲型分子的光谱特性研究

英文题名：Spectral Characteristics of Bent-Core Azobenzen Monomers

作者：董寅[1];沈冬[1];郑致刚[1]

机构：[1]华东理工大学理学院化学物理研究室,上海200237

年份：2012

卷号：27

期号：1

起止页码：14

中文期刊名：液晶与显示

外文期刊名：Chinese Journal of Liquid Crystals and Displays

收录：CSTPCD;;Scopus;北大核心:【北大核心2011】；CSCD:【CSCD_E2011_2012】；

基金：国家自然科学基金(No.60878047;No.61108065)

语种：中文

中文关键词：偶氮;分子弯曲角;紫外可见吸收

外文关键词：azo; angle of molecules; UV-Vis absorption

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。
The azo（—NN—） 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.