含不同基团偶氮苯化合物的合成及其光致异构化性质  

Synthesis and Photoisomerization Behavior of Azobenzene Compounds Containing Various Groups

作　　者：刘佳[1] 田进涛[1] 

机构地区：[1]中国海洋大学材料科学与工程研究院,山东青岛266100

出　　处：《合成化学》2016年第4期338-341,345,共5页Chinese Journal of Synthetic Chemistry

基　　金：山东省自然科学基金资助项目(ZR2013EMM017)

摘　　要：以苯胺或对硝基苯胺为起始原料,通过重氮偶合法合成了4种分别含有硝基、氨基和不同数目偶氮基的偶氮苯化合物（1-4）,其结构经^1H NMR和FT-IR确证。研究了1-4在紫外灯（12 W）照射下随时间变化的UVVis谱图。结果表明：含有给电子基团（NH2）偶氮苯的光致异构化速率较含有吸电子基团（NO2）时更快,NO2对分子的异构化有一定抑制作用;分子中偶氮基的数目增加时,顺反异构化过程也受到影响。Four kinds of azobenzene compounds （ 1 - 4） containing nitro, amino, and different number of azo groups were synthesized by diazo coupling reaction from aniline or 4-nitroaniline. The structures were confirmed by ^1H NMR and F^-IR. The UV-Vis spectra of 1 - 4 under UV irradiation were investigated. The results showed that the photoisomerization rate of the compounds linked with electron-donating group（ NH2 ） was faster than those linked with electron withdrawing group （NO2 ）. The photoisomerization was therefore restrained by NO2. The the number of azo couples. cis/trans isomerization process was also affected by

关 键 词：苯胺 重氮偶合法 偶氮苯 合成 光致异构化 

分 类 号：O625.6[理学—有机化学]