Wavepacket motion during thermalization of self-trapped exciton driven by an intramolecular vibration in one-dimensional platinum dimethylglyoxime complex

S. Iwai, T. Kamata, S. Murata, K. Yamamoto, T. Ohta

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

Formation and thermalization processes of the self-trapped excitons (STEs) in one-dimensional platinum dimethylglyoxime complex (1D Pt (dmg)2) have been investigated by femtosecond pump-probe spectroscopy using 40 and 150 fs ultrashort pulses. The spectral shape of the excited state absorption from the STE changed with time in the 0.1-0.3 ps time region after instantaneous rise up. These spectral behaviors can be explained by the formation (< 50 fs rise) and the thermalization (spectral change in 0.1-0.3 ps) of the STE. Furthermore, an oscillation (1 period = 110 fs) superimposed on the excited state absorption was observed. This oscillation is considered to originate from the wavepacket motion of the STE during thermalization. The formation time (< 50 fs) of the STE and the period of the oscillation (110 fs) are shorter than the period of the intermolecular stretching mode. This suggests that the intramolecular modes are more important for the relaxation dynamics.

Original languageEnglish
Pages (from-to)629-632
Number of pages4
JournalJournal of Luminescence
Volume87
DOIs
Publication statusPublished - 2000 May
Externally publishedYes
EventInternational Conference on Luminescence and Optical Spectroscopy of Condensed Matter (ICL'99) - Osaka, Jpn
Duration: 1999 Aug 231999 Aug 27

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Chemistry(all)
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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