2-芳基苯并噻唑荧光性能的研究

本文合成了四种2-芳基苯并噻唑类化合物,研究了它们多品粉末的发光,对其发光机理进行了探讨,分析了取代基和共轭程度对激发光谱、发射光谱及Stokes位移的影响。

STUDY OF LUMINESCENT PROPERTIES IN 2-ARYLBENZOTHIAZOLE

Four 2-arylbenzothiazole compounds have been synthesised.All the compounds show fluorescence. From the fluorescence excitation spectra of compounds of Ⅰ、Ⅱ、Ⅲ and Ⅳ, it is seen that each spectrum has three excitation bands,two shorter wavelength excitation peaks are always at 310 urn and 360 nm respectively; nother longest excitation band is located at different positions for different compounds. The longest excitation bands and emission spectra of compounds Ⅱ,Ⅲ and Ⅳ occur red shift in comparison with the longest excitation band and emission spectrum of Ⅰ because of the interaction between donor and acceptor in compounds Ⅱ and Ⅲ or the enhancement of conjugated degree in Ⅳ.