S2 fluorescence from picene vapor

Takao Itoh; Minoru Yamaji; Hideki Okamoto

doi:10.1016/j.cplett.2013.03.055

S₂ fluorescence from picene vapor

Takao Itoh, Minoru Yamaji, Hideki Okamoto

Research output: Contribution to journal › Article › peer-review

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, π^{â̂ -}) state in addition to strong S₁(π, π^{â̂ -}) 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 language	English
Pages (from-to)	26-28
Number of pages	3
Journal	Chemical Physics Letters
Volume	570
DOIs	https://doi.org/10.1016/j.cplett.2013.03.055
Publication status	Published - 2013

ASJC Scopus subject areas

Physics and Astronomy(all)
Physical and Theoretical Chemistry

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@article{558e7d50128f4601a299fceef8475c6a,

title = "S2 fluorescence from picene vapor",

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, π{\^a}̂ -) state in addition to strong S1(π, π{\^a}̂ -) 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.",

author = "Takao Itoh and Minoru Yamaji and Hideki Okamoto",

note = "Funding Information: This work was supported in part by grants-in-aid for scientific research from JSPS (No. 23350059 and 24550054 ). Copyright: Copyright 2013 Elsevier B.V., All rights reserved.",

year = "2013",

doi = "10.1016/j.cplett.2013.03.055",

language = "English",

volume = "570",

pages = "26--28",

journal = "Chemical Physics Letters",

issn = "0009-2614",

publisher = "Elsevier",

}

TY - JOUR

T1 - S2 fluorescence from picene vapor

AU - Itoh, Takao

AU - Yamaji, Minoru

AU - Okamoto, Hideki

PY - 2013

Y1 - 2013

N2 - 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.

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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U2 - 10.1016/j.cplett.2013.03.055

DO - 10.1016/j.cplett.2013.03.055

M3 - Article

AN - SCOPUS:84877067678

VL - 570

SP - 26

EP - 28

JO - Chemical Physics Letters

JF - Chemical Physics Letters

SN - 0009-2614