【摘要】 将要综述由于荧光淬灭引发染料漂白量子效率减少。闪光灯泵浦7—二已基胺—4—甲基香豆素乙醇溶液发生的光化变值过程及泵浦幅照引起的二种不可逆反应及5种光化产物。带有羧基基团的若丹明染料漂白随染料浓度减少而加速,溶剂碱性增大,染料随它们被漂白的 IR 吸收光谱变化同样有内酯形式的表迹。更多还原

【Abstract】 It is to be overviewed that the bleached quantum yield of dyes isdecreased by fluorescence puenching.The photochemical degradation occurs in a flashlamp pumped dyelaser using an ethanol solution of 7-djethylamino-4-methyleoumarin,andthe pump radiation gives rise to two irreversible roaction paths,resultingin five photochemical products in total.Bleaching process of rhodamine dyes with a carboxyl group is acceler-ated as the dye concentration decreases and the basicity of the solventsincreases.The change in the IR absorption specrta of the dyes as they arebleached shows evidence for the formation of lactones as well。更多还原