VIBRATIONAL RELAXATION OF ELECTRONICALLY EXCITED MOLECULES IN THE VAPOUR PHASE
Loading...
Date
1976
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Ohio State University
Abstract
The relaxation of vibrational energy of some aromatic hydrocarbons in the gas phase has been measured by using time-resolved fluorescence spectroscopy on a nanosecond time scale. Relaxation efficiencies have been obtained for various inert gases. The energy dependence of lifetimes and relative quantum yields of $S_{1}$- and $S_{2}$-fluorescence, measured under collision-free conditions, provides a calibration method for the energy content of the aromatic molecule during the relaxation process. Detailed information about the relaxation processes in glyoxal is obtained from time-resolved fluorescence decay measurements in the low pressure vapour. Recent experimental results will be presented.
Description
Author Institution: Laboratory for Physical Chemistry, University of Amsterdam