本文介绍了一种利用热透镜效应测量激光染料绝对荧光量子效率的简单有效的新方法.利用此法,具体地测量了(口恶)嗪1高氯酸盐(天津市染料所生产)在不同溶剂中、不同浓度下的绝对荧光量子效率,并对该染料溶于二氯乙烷或三氯甲烷中、比溶于乙醇、水等溶剂中的绝对荧光量子效率有明显增加的异常现象作了初步讨论.认为抑制发色团原子间的振动,将是提高激光染料绝对荧光量子效率的有效途径.

A simple and useful new method of measuring the absolute fluorescence quantum efficiencies of laser dyes by thermal lens effection is described in this paper. Using this method, we measure the absolute fluorescence efficiencies of oxazine 1 perchlorate (Ti njin Dye Institute, China) which is dissolved in several different solvents and different conoentra-tions, and discuss the unusual phenomenon, i.e. when the dye is dissolved in the 1, 2-dichloroethane or trichlotome-thane, it has much greater quantum efficiency than in the ethanol absolute, water etc. Wethink, retraining the vibrations between atoms of chromophore will be a effective way to imporve the absolute fluoresoence quantum efficiencies of 1aser dyes.