Abstract

The femtosecond time-resolved luminescence of a quasi-one-dimensional halogen-bridged platinum complex [ Pt(en) 2][ Pt(en) 2 I 2] (CIO4)4 (abbreviated as Pt-I) is observed. The observed lifetime of the exciton luminescence is rather shorter than those of the other Pt-X (X = halogen ion) systems which have relatively wider band gaps. This result is considered to show that the nonradiative relaxation process becomes more efficient in the narrow-gap system Pt-I.

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