S2 fluorescence from picene vapor

Takao Itoh, Minoru Yamaji, Hideki Okamoto

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Fluorescence, fluorescence excitation and absorption spectra of picene have been measured in the vapor phase. It is shown that picene vapor exhibits weak fluorescence from the S2(π, πâ̂ -) state in addition to strong S1(π, πâ̂ -) fluorescence. The S2/S1 fluorescence yield ratio is evaluated to be approximately 1.3 × 10-2 following the excitation into the S3 state. It is shown that the relative S 2 fluorescence quantum yield increases with increasing excitation energy, while the S1 fluorescence yield is nearly invariant. Mechanism of the appearance of the S2 fluorescence of picene vapor is discussed.

Original languageEnglish
Pages (from-to)26-28
Number of pages3
JournalChemical Physics Letters
Volume570
DOIs
Publication statusPublished - 2013

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Fluorescence
Vapors
vapors
fluorescence
excitation
picene
Excitation energy
Quantum yield
Absorption spectra
vapor phases
absorption spectra

ASJC Scopus subject areas

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

Cite this

S2 fluorescence from picene vapor. / Itoh, Takao; Yamaji, Minoru; Okamoto, Hideki.

In: Chemical Physics Letters, Vol. 570, 2013, p. 26-28.

Research output: Contribution to journalArticle

Itoh, Takao ; Yamaji, Minoru ; Okamoto, Hideki. / S2 fluorescence from picene vapor. In: Chemical Physics Letters. 2013 ; Vol. 570. pp. 26-28.
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AB - Fluorescence, fluorescence excitation and absorption spectra of picene have been measured in the vapor phase. It is shown that picene vapor exhibits weak fluorescence from the S2(π, πâ̂ -) state in addition to strong S1(π, πâ̂ -) fluorescence. The S2/S1 fluorescence yield ratio is evaluated to be approximately 1.3 × 10-2 following the excitation into the S3 state. It is shown that the relative S 2 fluorescence quantum yield increases with increasing excitation energy, while the S1 fluorescence yield is nearly invariant. Mechanism of the appearance of the S2 fluorescence of picene vapor is discussed.

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