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ON THE FLUORESCENCE OF KETONES OF THE ANDROSTANE SERIES
Author(s) -
WEINREB A.,
WERNER A.
Publication year - 1972
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1972.tb06255.x
Subject(s) - fluorescence , androstane , chemistry , phosphorescence , steroid , photochemistry , wavelength , absorption (acoustics) , excitation , solvent , excitation wavelength , intensity (physics) , oxygen , analytical chemistry (journal) , stereochemistry , optics , organic chemistry , physics , biochemistry , hormone , quantum mechanics
— The fluorescence spectrum and relative intensity of several ketoandrostanes is investigated as a function of the position of the carbonyl group on the steroid skeleton. The fluorescence intensity, though very low, depends rather strongly on the position. No dependence on solvent, excitation wavelength (in the vicinity of the first absorption peak), cooling or presence of oxygen was found. No phosphorescence was observed. The fluorescence decay time of the strongest fluorescing compound was measured to be 4·4 ± 0·2 nsec. For diketoandrostanes deactivation interactions between the carbonyl groups were found, depending on the position of the groups. The results are considered to be closely related to the vibrational pattern of the steroid frame.