The influence of solute absorbance in laser flash photolysis - actinometry in experiment and theory at non-vanishing absorbance

被引：11

作者：

von Sonntag, J ^{[1
]}

机构：

[1] IOM eV, Inst Oberflachenmodifizierung, D-04303 Leipzig, Germany

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 1999年 / 126卷 / 1-3期

关键词：

actinometry; laser flash photolysis; benzophenone-4-carboxylic acid; mathematical model;

D O I：

10.1016/S1010-6030(99)00104-5

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：

Laser flash photolysis set-ups are commonly operated with non-vanishing absorbance in order to obtain a maximum signal-to-noise ratio. The exponential law of light absorption leads to non-linear equations. An example of their mathematical treatment is given and compared with experiments using the benzophenone-4-carboxylic acid actinometer (excitation wavelength: 308 nm) up to a solute absorbance of 6. The influence of geometry in concert with solute absorbance on the signal reading is modelled. Two approximated mathematical solutions of the ensuing non-linear equations are presented together with their application for an optimisation of laser flash photolysis experiments. (C) 1999 Elsevier Science S.A. All rights reserved

引用

页码：1 / 5

页数：5

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