p-取代苯基化合物荧光发射光谱中取代基效应的定量研究  

The effect of substituent on the fluorescence emission spectrum of p-substituted benzyl compounds

作　　者：陈冠凡[1] 曹晨忠[1] 

机构地区：[1]湖南科技大学化学化工学院,湖南湘潭411201

出　　处：《湖南科技大学学报（自然科学版）》2009年第4期99-102,117,共5页Journal of Hunan University of Science And Technology：Natural Science Edition

基　　金：国家自然科学基金资助项目(20772028)

摘　　要：对不同体系的取代苯基化合物的荧光发射光谱中的取代基效应进行了研究.其中,对于二苯乙烯衍生物、1,4-双(取代苯乙炔基)苯,激发态取代基参数(σexcc)的单参数方程的相关系数均在0.98以上;对于取代苯乙烯、取代α-甲基苯乙烯和反,反-1,4-双(β-取代苯乙烯基)苯,则用Hammett参数(σp)和σexcc的双参数方程关联,相关系数均在0.96以上.结果表明,激发态取代基参数能用于共轭化合物的荧光发射能量的定量研究.表7,参21.The substituent effect on fluorescence emission spectra of different p-substituted benzyl compounds was investigated systematically. For stilbene derivatives and 1,4-bis （substituted phenylethynyl）benzenes, there were good correlations between their fluorescence emission wavenumbers and the single-parameter equation （σcc^ex） , and the correlation coefficients were above 0.95. For p-substitueted styrenes, p-substitueted a-methyl styrenes and trans, trans- 1,4-bis （substituted phenylethenyl）benzenes, there were also good correlations between their fluorescence emission wavenumbers and the dual-parameter equation（σcc^ex and σp） , and the correlation coefficients were above 0.96. The results showed that the excited-state substituent constantσcc^exis applied to investigate the fluorescence emission wavenumbers of conjugated compounds with large-scale delocalized π-bond. 7tabs., 2 l refs.

关 键 词：激发态取代基参数 取代二苯乙烯 荧光发射光谱 取代基效应 

分 类 号：O621.4[理学—有机化学]