RADIATIVE AND RADIATIONLESS PROCESSES IN AROMATIC MOLECULES: PYRENE.
Abstract
The fluorescence yield, triplet yield, and fluorescence lifetime for pyrene-h10 and pyrene-d10 have been measured as a function of temperature. The phosphorescence yield, and phosphorescence lifetime, have also been determined. However, in pyrene-d10 the fluorescence yield increases with increasing temperature, indicating that the rate constant for intersystem crossing has a temperature-dependent part. The variation of fluorescence lifetime and triplet yield with temperature for a pyrene-h10 is attributable in toto to a temperature-sensitive internal conversion; in pyrene-d10 both internal conversion and inter-system crossing are temperature-dependent and contribute to the observed variations. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 30, 1968
- Accession Number
- AD0682245
Entities
People
- J. L. Kropp
- M. W. Windsor
- W. R. Dawson