中国物理B ›› 2009, Vol. 18 ›› Issue (1): 142-148.doi: 10.1088/1674-1056/18/1/022
王素凡1, 郭逊敏2, 宛岩2, 夏安东2, 刘建勇3, 韩克利3
Guo Xun-Min(郭逊敏)a), Wan Yan(宛岩)a), Xia An-Dong(夏安东)a)†, Wang Su-Fan(王素凡)b), Liu Jian-Yong(刘建勇)c), and Han Ke-Li(韩克利)c)‡
摘要: The rapid internal conversion dynamics at room temperature is determined by using the femtosecond time-resolved fluorescence depletion measurements of a complex solvated molecule of LD 700 (rhodamine 700) combined with steady-state absorption and fluorescence spectroscopy, as well as quantum chemical calculation. The molecule is excited by a 50fs laser pulse at 400nm which directly populated the highly excited singlet state, the rapid internal conversions (ICs) are observed, which leads to the directional changes of the emission transition moment following photoexcitation to the highly excited singlet state S5 of LD 700.
中图分类号: (Fluorescence and phosphorescence spectra)