2种偶氮席夫碱类化合物的合成及其热致变色性质  

Synthesis and Thermochromic Properties of Two Azo Shiff′s

作　　者：郭宏仓[1] 傅正生[1] 廖乐星[1] 袁莉[1] 

机构地区：[1]西北师范大学化学化工学院,兰州730070

出　　处：《应用化学》2009年第5期530-533,共4页Chinese Journal of Applied Chemistry

基　　金：甘肃省高分子材料重点实验室基金(011-01)资助项目

摘　　要：通过重氮偶合反应制得2种氨基偶氮化合物在经纯化干燥后,与水杨醛的乙醇溶液在60℃反应4 h分别得到2种偶氮席夫碱类目标化合物,通过元素分析、核磁共振氢谱、红外光谱测试技术表征了其结构。紫外光谱测试化合物在DMSO溶液的紫外吸收,在升温速率为1.5℃/m in测试时,化合物A和B紫外吸收表现出热致变色性质;在45℃的恒定温度测试时,化合物A在450和348 nm的吸光度值与时间呈线性关系,化合物B在425和356 nm的吸光度值与时间呈线性关系。研究表明,2种偶氮席夫碱类化合物有良好的热致变色性,是性能良好的热致变色材料。Two amido azobenzene compounds were synthesized by diazo coupling reaction, which were purified and dried and reacted with salicylaldehyde at 60℃ for 4 hours to yield, two azo schiff bases respectively. All the compounds were characterized by elemental analysis, ^1H NMR and IR. The UV-Vis spectroscopy testing of the compounds showed that compounds A and B have good thermochromism behavior at a heating rate of 1.5 ℃/min; at 45 ℃ compound A＇s absorptions at 450 nm and 348 nm exhibited linear relationship with time, and compound B＇s absorptions at 425 nm and 356 nm exhibited linear relationship with time, respectively. The results showed they are good thermochromism materials.

关 键 词：热致变色 偶氮席夫碱 线性关系 

分 类 号：O622.6[理学—有机化学]