Accession Number : AD0683699

Title :   ENVIRONMENTAL EFFECTS ON PHOSPHORESCENCE. VI. MATRIX SITE EFFECTS FOR TRIPHENYLENE.

Descriptive Note : Technical rept.,

Corporate Author : CALIFORNIA UNIV SANTA BARBARA DEPT OF CHEMISTRY

Personal Author(s) : Offen,Henry W. ; Hein,David E.

Report Date : 25 FEB 1969

Pagination or Media Count : 21

Abstract : The phosphorescence lifetime and spectra of triphenylene are studied in different matrices at 77K and as a function of increasing pressure (0-30 kbar). The magnitude of the pressure shift of the spectra and the pressure coefficient of the lifetime depend upon the size of the molecules comprising the solvent cage. This difference in pressure response is attributed to the preponderance of repulsive interactions between highly symmetric triphenylene and smaller solvent molecules under pressure. (Author)

Descriptors :   (*POLYCYCLIC COMPOUNDS, *PHOSPHORESCENCE), (*CRYSTAL LATTICES, PHOSPHORESCENCE), RELAXATION TIME, ELECTRON TRANSITIONS, AROMATIC COMPOUNDS, PRESSURE, ULTRAVIOLET SPECTRA, VISIBLE SPECTRA, VIBRATION, MOLECULAR ENERGY LEVELS

Subject Categories : Radiation and Nuclear Chemistry
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE