2-(ω-联苯基多亚甲基)-5-联苯基-1,3,4-二唑的荧光光谱研究

本文测定了双荧光团化合物2-(ω-联苯基多亚甲基)-5-联苯基-1,3,4-二唑及其模型化合物2-甲基-5-联苯基-1,3,4-二唑和2,5-二联苯基-1,3,4-二唑的荧光光谱.对分子内,分子间激基缔合物和激基复合物的形成进行了研究,并对分子构型与形成分子内激基复合物之间关系作了初步探讨.从实验结果得到,亚甲基桥链的碳数为奇数时容易形成分子内激基复合物.

A study on the fluorescence spectra of 2-(.omega.-biphenylyl-polymethylene)-5-biphenylyl-1,3,4-oxadiazole

The fluorescence spectra of bichromophore compounds I (n = 1, 2, 3, 4) and the model compounds 2-methyl-5-biphenylyl-1,3,4-oxadiazole and 2,5-dibiphenylyl-1,3,4-oxadiazole have been determine The formation of intra- and intermol. excimer and exciplex have been studied. The relationship between the mol. configuration and the formation of intra exciplex have been discussed. From the experimental results, it can be seen, when the no. of the carbon atoms of methylene bridge is odd, intra exciplex is readily formed.