Jet cooled spectra of pyrrolobenzene and of pyrrolobenzonitrile: the nature of the excited states

被引：22

作者：

Belau, L

Haas, Y ^{[1
]}

Rettig, W

机构：

[1] Hebrew Univ Jerusalem, Dept Phys Chem, IL-91904 Jerusalem, Israel

[2] Hebrew Univ Jerusalem, Farkas Ctr Light Induced Proc, IL-91904 Jerusalem, Israel

[3] Humboldt Univ, Inst Phys & Theoret Chem, Dept Chem, D-12489 Berlin, Germany

来源：

CHEMICAL PHYSICS LETTERS | 2002年 / 364卷 / 1-2期

基金：

以色列科学基金会;

关键词：

D O I：

10.1016/S0009-2614(02)01316-7

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：

The jet cooled fluorescence and resonance enhanced multiphoton ionization (REMPI) excitation spectra of pyrrolobenzene (PB) and pyrrolobenzonitrile (PBN) were recorded in the UV range. Fluorescence lifetimes and emission spectra were obtained upon excitation up to 2200 cm(-1) above the 0-0 band. The data indicate that the emission is from the forbidden L-b-type state, while the absorption spectrum in solution is dominated by the La-type state. The energy gap between S-1 and S-2, in these molecules is very small (around 500 cm(-1)); at room temperature, hot bands of the more allowed L.-type transition are expected to dominate the absorption spectrum. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：157 / 163

页数：7

共 19 条

[1] Dual fluorescence and multiple charge transfer nature in derivatives of N-pyrrolobenzonitrile [J].