Sub-5 fs time-resolved dynamic Franck-Condon overlaps associated with the S1 → S0 stimulated transition in oligothiophene 13-mer

A. Ozawa, K. Takimiya, T. Otsubo, T. Kobayashi

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


The transient difference absorption spectrum of a substituted α-linked oligothiophene 13-mer was measured by sub 5-fs pump-probe spectroscopy. This molecule is the longest oligothiophene studied under time-resolved investigation. The spectrum observed in the sub-ps range exhibited a feature of the dynamic Stokes shift. A simple numerical calculation based on the Franck-Condon (FC) overlaps induced by molecular vibration reproduced the modulation on the difference absorption spectrum. These results verify the time-dependent FC overlap in this molecule.

Original languageEnglish
Pages (from-to)224-229
Number of pages6
JournalChemical Physics Letters
Issue number4-6
Publication statusPublished - 2005 Jun 30
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry


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