Evidence of vibrational relaxation from non-Boltzmann to Boltzmann distribution over ν′=0, 1, 2 levels in S1 perylene in solution:: Franck-Condon analysis of time-resolved fluorescence

被引：6

作者：

Kasajima, T ^{[1
]}

Akimoto, S ^{[1
]}

Sato, S ^{[1
]}

Yamazaki, I ^{[1
]}

机构：

[1] Hokkaido Univ, Grad Sch Engn, Dept Mol Chem, Sapporo, Hokkaido 0608628, Japan

来源：

CHEMICAL PHYSICS LETTERS | 2003年 / 375卷 / 1-2期

关键词：

D O I：

10.1016/S0009-2614(03)00825-X

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Thermal relaxation process of a vibrational excess energy of similar to2800 cm(-1) deposited on nu' = 2 level of ring-breathing mode has been investigated on S-1 perylene and S-1 12-(3-perylenyl)dodecanoic acid in 2-methyltetrahydrofuran at room temperature. The Franck-Condon analysis of femtosecond time-resolved fluorescence spectra indicated that noticeable vibrational transients exist at nu' = 2 level even a few picoseconds after photoexcitation. It was confirmed that the population distribution over nu' = 0, 1, 2 levels is non-Boltzmann type at early time stage and converges into Boltzmann type with a few picoseconds time constant. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：227 / 232

页数：6

共 16 条

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