物理化学学报 >> 1996, Vol. 12 >> Issue (03): 193-195.doi: 10.3866/PKU.WHXB19960301

通讯    下一篇

四苯基卟啉等分子的超快弛豫过程研究

衷庆华,王朝晖,朱起鹤,孔繁敖   

  1. 中国科学院化学研究所分子反应动力学国家重点实验室，北京 100080
  • 收稿日期:1995-11-27 修回日期:1995-12-28 发布日期:1996-03-15
  • 通讯作者: 孔繁敖

Study of the Ultrafast Processes of TPP,BuPc and NtBuPc

Zhong Qing-Hua,Wang Zhao-Hui,Zhu Qi-He,Kong Fan-Ao   

  1. State Key Laboratory of Molecular Reaction Dynamics Institute of Chemistry,Chinese Academy of Science,Beijing 100080
  • Received:1995-11-27 Revised:1995-12-28 Published:1996-03-15
  • Contact: Kong Fan-Ao

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关键词: 双光子吸收, 飞秒时间分辨, 荧光凹陷, 四苯基卟啉, 四特丁基酞菁, 硝基三特丁基酞菁

Abstract:

The ultrafast processes of tetra-phenyl-porphyrin(TPP), tetra-t-butyl-phthalocyanine(BuPc) and nitro-tri-t-butyl-phthalocyanine (NtBuPc) have been investigated using the femtosecond time-resolved fluorescence depletion method. A sharp peak of the fluorescence depletion with delay time has been observed both for TPP and BuPc. An ultrafast two-photon absorption process has been proposed to explain the sharp peak observed. A long-lived fluorescence depletion has also been observed. It is causing by the stimulated-emission-pumping process produced by the intense probe laser pulse.

Key words: Two-photon absorption;Femtosecond time-resolusion, Fluorescence depletion, Tetra-phenyl-porphyrin(TPP), Tetra-t-butyl-phthalocyanine(BuPc), Nitro-tri-t-butyl-phthalocyanine(NtBuPc)