Observation of the wave-packet oscillation during the exciton self-trapping process in a quasi-one-dimensional halogen-bridged Pt complex

Article

关键词: VALENCE METAL-COMPLEXES;    LATTICE-RELAXATION;    OPTICAL-RESPONSE;    SPECTROSCOPY;    EXCITATION;    DYNAMICS;   

DOI  :  10.1103/PhysRevB.60.7961

来源: SCIE

【 摘 要 】

Using femtosecond time-resolved luminescence spectroscopy, we have observed a wave-packet oscillation in an adiabatic potential well associated with a self-trapped exciton (STE). We have investigated the STE luminescence band of a quasi-one-dimensional halogen-bridged platinum complex [Pt(en)(2)][Pt(en)(2)Br-2](ClO4)(4). In the time evolution of the luminescence, we have observed an oscillation with a period of about 300 fs. This result shows the formation of a wave packet and its oscillation, which is damped with the time constant of about 430 fs. The STE's have a lifetime of about 5.5 ps at room temperature. [S0163-1829(99)06135-4].

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