Ultrafast dynamics of lattice relaxation of excitons in quasi-one-dimensional halogen-bridged platinum complexes
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概要
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"The temporal evolution of the photoexcited state in quasi-one-dimensional (1D) halogen-bridged platinum complexes [Pt(en)2][Pt(en)2X2](ClO4)4 (abbreviated as Pt-X, X=Cl, Br or I), has been comprehensively studied by femtosecond time-resolved luminescence spectroscopy. In Pt-Cl, new short-lived hot luminescence is found in the low-energy side of a self-trapped excitonSTE luminescence band. The overall behavior of the STE luminescence band within 2 ps is well explained by the vibrational relaxation of the STE. The behavior is reproduced by a model calculation based on wave packet propagation on an interaction mode composed of frequency-dispersed bulk phonons. This model is also applied to the previous results in Pt-Br. For both Pt-Cl and Pt-Br, the frequency spectra of phonons which compose the interaction mode have been estimated. In Pt-I, the STE luminescence decays much faster than those in Pt-Cl and Pt-Br, showing existence of more effective nonradiative decay channel."
- American Institute of Physicsの論文
著者
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Kurita S
Faculty Of Engineering Yokohama National University
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Suemoto T
Univ. Tokyo Chiba
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Kurita Susumu
Institute Of Physics The University Of Tsukuba:hiroshima Branch Japan Meteorological Agency
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KURITA Susumu
Faculty of Engineering, Yokohama National University : National Magnet Laboratory, Massachusetts Institute of Technology
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