Time-resolved fluorescence spectroscopy of porphyrin J-aggregates using optical Kerr gate methods

Hideaki Kano, Takayoshi Kobayashi

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

We observed for the first time ultra-fast relaxation process due to internal conversion from S2 -exciton to S1-exciton in porphyrin J-aggregates using the optical Kerr gate method. The S2 fluorescence shows sharp spectra with almost zero Stokes shift. The decay time is less than the instrumental function and cannot be time-resolved by the Kerr gate method. The relaxation time of the S2-exciton was also measured by pump-probe spectroscopy with about 10 fs resolution, and the decay time, 130 ± 10 fs, was consistently obtained with that of the S2 fluorescence.

Original languageEnglish
Pages (from-to)859-861
Number of pages3
JournalJournal of the Chinese Chemical Society
Volume47
Issue number4 A
DOIs
Publication statusPublished - 2000
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

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