摘要
应用紫外 可见吸收光谱和荧光光谱研究了噻唑橙染料水溶液在阴离子表面活性剂存在下聚集状态及光谱性质 .当添加阴离子表面活性剂浓度在 10 - 5mol·L- 1 范围时 ,噻唑橙易发生二聚乃至三聚 .当阴离子表面活性剂浓度大于 10 - 3 mol·L- 1 并达到临界胶束浓度时 (对于十二烷基苯磺酸钠 ,cmc =8.3× 10 - 3 mol·L- 1 ) ,噻唑橙完全解聚为单体 .其荧光强度高于水溶液 ,而多聚体的荧光强度较低 ,最大发射波长发生红移 。
By making use of UV VIS absorption spectroscopy and fluorescence spectroscopy, the aggregation and spectral characteristics of thiazol orange dye in aqueous solution with anionic surfactants has been studied. Addition of anionic surfactants of concentration in the range of 10 -5 mol·L -1 causes the dimerization or trimerization of thiazol orange. As the concentration of anionic surfactants are larger than 10 -3 mol·L -1 and up to the critical micelle concentration (for DBS, cmc=8.3×10 -3 mol·L -1 ), only the monomer of thiazol orange can be found, its fluorescence is stronger than that in the aqueous solution. The fluorescence of multi aggregates decreases, their maximum emission wavelength shifts to red and optical stability reduces.
出处
《辽宁师范大学学报（自然科学版）》
CAS
2001年第4期392-395,共4页
Journal of Liaoning Normal University:Natural Science Edition
