Accession Number : AD0735483

Title :   Studies of the Formation and Decay of Triplet States of Aromatic Molecules.

Descriptive Note : Final rept. March 67-Dec 71,

Corporate Author : TRW SYSTEMS GROUP REDONDO BEACH CALIF

Personal Author(s) : Windsor,Maurice W.

Report Date : 23 DEC 1971

Pagination or Media Count : 55

Abstract : Experimental techniques for measuring fluroescence, phophorescence and triplet quantum yields for organic molecules in rigid plastic media as a function of temperature were developed. Comprehensive sets of data were obtained for pyrene, coronene, 1,2-benzocoronene and 1,12-benzperylene. The florescence yields of 18 aromatics were observed in absorption using the new technique of nonosecond laser photolysis ane spectroscopy. The effects of H-banding were studied in several aza-aromatics. The data obtained were used to draw conclusions relevant to the theory of radiationless transitions. Finally an experimental technique for pico-second laser photolysis and spectroscopy was developed and used to observe inverse Raman spectra of several molecules and a new subnanosecond transient absorption in the dye laser molecule, Rhodamine-6G. (Author)

Descriptors :   (*AROMATIC COMPOUNDS, *ELECTRON TRANSITIONS), (*LUMINESCENCE, AROMATIC COMPOUNDS), MOLECULAR ENERGY LEVELS, IONIZATION POTENTIALS, FLUORESCENCE, PHOSPHORESCENCE, RELAXATION TIME, POLYCYCLIC COMPOUNDS, RAMAN SPECTROSCOPY, PHOTOLYSIS

Subject Categories : Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE