Fluorescence lifetime of gas-phase toluene at elevated temperatures

被引：16

作者：

Zimmermann, Frank P.

Koban, Wieland

Roth, Christian M.

Herten, Dirk-Peter

Schulz, Christof

机构：

[1] Univ Duisburg Essen, IVG, D-47057 Duisburg, Germany

[2] Univ Heidelberg, PCI, D-69120 Heidelberg, Germany

来源：

CHEMICAL PHYSICS LETTERS | 2006年 / 426卷 / 4-6期

关键词：

D O I：

10.1016/j.cplett.2006.05.135

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 fluorescence lifetime of toluene in the gas phase upon excitation at 248 nm was investigated as a function of temperature (296625 K) via time-correlated single-photon counting (TCSPC) in nitrogen bath gas at 1 bar total pressure. The fluorescence decay can be represented by a bi-exponential function. Lifetimes are decreasing with increasing temperature, with the long lifetime component ranging from 45 to 2 ns and the short component from 2 to 0.4 ns in the investigated temperature range. Our results suggest high repetition-rate laser excitation of tracers like toluene in combination with TCSPC as a novel tracer-concentration-independent method for determining gas-phase temperatures. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：248 / 251

页数：4

共 19 条

[1] FLUORESCENCE STUDIES OF SOME SIMPLE BENZENE DERIVATIVES IN THE NEAR ULTRAVIOLET .2. TOLUENE AND BENZONITRILE [J].