Exciton transition energy and temperature dependence of ultrafast relaxation of self-trapped excitons in polydiacetylenes

Masayuki Yoshizawa, Katsuhiko Nishiyama, Masamichi Fujihira, Takayoshi Kobayashi

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)

Abstract

Exciton transition energies and temperature dependence of ultrafast relaxation processes have been investigated in polydiacetylene (PDA-(12,8) Langmuir-Blodgett films with several exciton transition energies using femtosecond absorption spectroscopy. The relaxation from self-trapped exciton to the ground state in PDA with 1.88 eV exciton energy is faster than that relaxation in PDA with larger exciton energy. The decay kinetics in PDAs can be explained in terms of tunneling in the configuration space from the self-trapped exciton to the ground state.

Original languageEnglish
Pages (from-to)461-467
Number of pages7
JournalChemical Physics Letters
Volume207
Issue number4-6
DOIs
Publication statusPublished - 1993 May 28
Externally publishedYes

ASJC Scopus subject areas

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

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