摘要
由于静电相互作用，ＰｙＴＳ溶液与ＭＶ２＋溶液混合后能形成ＰｙＴＳ／ＭＶ２＋基态复合物，由吸收光谱滴定得到其组成成分为１１的二聚物；而由荧光光谱滴定得到ＰｙＴＳ／ＭＶ２＋复合物组成成分不仅有１１的二聚物，而且还有１２的三聚物；由瞬态吸收光谱可观察到ＭＶ＋、ＰｙＴＳ＋的瞬态吸收峰，这表明ＰｙＴＳ／ＭＶ２＋复合物被光激发后，发生了由ＰｙＴＳ到ＭＶ２＋的电子转移过程；
In PyTS and MV 2+ mixture solution in water, the PyTS/MV 2+ complex can be formed by electrostate interaction between PyTS and MV 2+ . From absorption titration results, the stoichiometry of PyTS/MV 2+ complex is 1∶1 dimer. However, the stoichiometries in PyTS/MV 2+ complex have 1∶1 dimer and 1∶2 trimer from fluorescence titration results, these results indicate that fluorescence titration method is more sensitive than absorption titration. The transient absorption peaks of MV + and PyTS + have been detected using nanosecond transient absorption method, it shows that the electron transfer process from PyTS to MV 2+ occurs when the PyTS/MV 2+ complex was excited. We proposed the dynamic schemes from fit results of absorption decays.
出处
《发光学报》
EI
CAS
CSCD
北大核心
1997年第3期242-247,共6页
Chinese Journal of Luminescence
