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Citation: Zhong Qing-Hua, Wang Zhao-Hui, Zhu Qi-He, Kong Fan-Ao. Study of the Ultrafast Processes of TPP,BuPc and NtBuPc[J]. Acta Physico-Chimica Sinica, ;1996, 12(03): 193-195. doi: 10.3866/PKU.WHXB19960301 shu

Study of the Ultrafast Processes of TPP,BuPc and NtBuPc

1.
State Key Laboratory of Molecular Reaction Dynamics Institute of Chemistry,Chinese Academy of Science,Beijing 100080

Received Date: 27 November 1995
Available Online: 15 March 1996

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.
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