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:

1971-12-23

Pagination or Media Count:

55.0

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