Excitation energy dependence of excited states dynamics in all-trans-carotenes determined by femtosecond absorption and fluorescence spectroscopy

Daisuke Kosumi, Kazuhiro Yanagi, Tomohiro Nishio, Hideki Hashimoto, Masayuki Yoshizawa

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)

Abstract

Ultrafast relaxation kinetics in β-carotene and lycopene has been investigated by femtosecond absorption and fluorescence spectroscopies using tunable excitation pulses. The transient signals induced by the photoexcitation with larger excess energy have broader bands and longer lifetimes both in the 11Bu+and21Ag- excited states. The excess vibrational energy remains longer than several picoseconds and slows the relaxation kinetics in carotenoids.

Original languageEnglish
Pages (from-to)89-95
Number of pages7
JournalChemical Physics Letters
Volume408
Issue number1-3
DOIs
Publication statusPublished - 2005 Jun 7

ASJC Scopus subject areas

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

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