Author/Authors :
Zhang، نويسنده , , Tieqiao and Chen، نويسنده , , Ciping and Gong، نويسنده , , Qihuang and Yan، نويسنده , , Wenpeng and Wang، نويسنده , , Shufeng and Yang، نويسنده , , Hong and Jian، نويسنده , , Huahua and Xu، نويسنده , , Guangzi Lan، نويسنده ,
Abstract :
The photophysics and isomerization dynamics in the excited state of a cyanine dye, 3,3′-di(3-sulfopropyl)-thiacyanine triethylaminium salt was investigated. Using the femotosecond time-resolved fluorescence up-conversion technique, wavelength-dependent fluorescence dynamics was observed and the theoretical prediction of the dual fluorescence behavior was vindicated. The results were explained using a barrierless isomerization reaction model. The origins of two decay components were assigned to the relaxation within the excited state and the S1→S0 transition, respectively, and the time constants were obtained.
