FLUORESCENCE LIFETIMES OF PYRENE MONOMER AND EXCIMER AT HIGH PRESSURES.
Abstract
The fluorescence lifetimes of a number of aromatic hydrocarbons are shortened by 15-40% when the matrix is compressed by 30 kbar pressure. The causes of environmentally-induced lifetime shortening may be further illuminated by a detailed study of one solute under a variety of conditions. The document reports on such a study of pyrene and in addition, compares the pressure-enhanced electronic relaxation for the monomeric and excimeric forms of pyrene. The work established the magnitude of environmental influences on the singlet lifetime of pyrene and demonstrated a remarkable insensitivity of the emitting species to the nature of the microscopic surroundings, be it monomer or excimer.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 02, 1969
- Accession Number
- AD0688928
Entities
People
- D. T. Phillips
- H. W. Offen
- J. J. Kim
- R. A. Beardslee
Organizations
- University of California, Santa Barbara