芳基取代咪唑衍生物的合成及其紫外、荧光性质研究

Synthesis,ultraviolet and fluorescence properties of aromatic substituted imidazole compounds

设计合成了两种新颖的三芳基咪唑类化合物5和6,研究了其反应机理,优化了环合加成反应的工艺条件,化合物经FT-IR、HMR和MS进行结构表征。研究了两个化合物在不同溶剂中的紫外与荧光光谱,发现官能苄基的引入,会使吸收峰和发射峰均有不同程度的蓝移,这些光谱性质为今后研究其双光子吸收、双光子荧光和非线性光学性质奠定了实验基础。

Two aromatic substituted imidazole compounds,4-（4,5-bis（3-nitrophenyl）-1H-imidazole-2-yl）-3,6-biacetyl-9-ethyl-carbazole（5）and 4-（1-benzyl-4,5-bis（3-nitrophenyl）-imidazol-2-yl）-3,6-biacetyl-9-ethyl-carbazole（6）were synthesized and their structures were confirmed by FT-IR、NMR and MS.The reaction condition of cycloaddition was optimized and the mechanism was also deduced.Their UV and fluorescence properties in different solvents had been investigated and the results showed that the benzyl group of 5 made the absorption and emission spectra blue-shift compared to the spectra of 5.