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Organoplatinum(II) Complexes with Chromophore–Acceptor Dyad Studied by Ultrafast Time-Resolved Absorption Spectroscopy

Authors

  • Siu-Wai Lai Dr.,

    1. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Peking, 100080 (China), Fax: (+86) 10-6255-4670
    2. Department of Chemistry and HKU-CAS Joint Laboratory on New Materials, The University of Hong Kong, Pokfulam Road (Hong Kong), Fax: (+852) 2857-1586
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    • Drs. S.-W. Lai and Y. Chen contributed equally to this work.

  • Yong Chen Dr.,

    1. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Peking, 100080 (China), Fax: (+86) 10-6255-4670
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    • Drs. S.-W. Lai and Y. Chen contributed equally to this work.

  • Wai-Ming Kwok Dr.,

    1. Department of Chemistry and HKU-CAS Joint Laboratory on New Materials, The University of Hong Kong, Pokfulam Road (Hong Kong), Fax: (+852) 2857-1586
    2. Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Kowloon (Hong Kong)
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  • Xi-Juan Zhao Dr.,

    1. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Peking, 100080 (China), Fax: (+86) 10-6255-4670
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  • Wai-Pong To,

    1. Department of Chemistry and HKU-CAS Joint Laboratory on New Materials, The University of Hong Kong, Pokfulam Road (Hong Kong), Fax: (+852) 2857-1586
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  • Wen-Fu Fu Prof. Dr.,

    1. Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Peking, 100080 (China), Fax: (+86) 10-6255-4670
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  • Chi-Ming Che Prof. Dr.

    1. Department of Chemistry and HKU-CAS Joint Laboratory on New Materials, The University of Hong Kong, Pokfulam Road (Hong Kong), Fax: (+852) 2857-1586
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Abstract

original image

Femtosecond time-resolved absorption revealed the formation of charged-separated [ClPtIII{CNN(PhMV+⋅)}] species (left) with a forward rate constant of about 1012 s−1, which is more rapid than that of the back electron-transfer process (k−1=1.6×109 s−1). Similar slower back ET reaction than forward light-induced ET reaction of [Pt(MV-bpy)(C[TRIPLE BOND]CPh)2](PF6)2 (right) has been observed. MV=methyl viologen.

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