title: Phosphorescence of 8-azasteroids and related compounds.
abstract: We have investigated the electron absorption, fluorescence and phosphorescence spectra of 8-azasteroids and model compounds containing enaminodicarbonyl fragment. It has been shown that the investigated compounds have absorption and phosphorescence spectra similar in form and position. The results obtained permit the conclusion that the main deactivation channel of the excited singlet state is the intersystem crossing. It is suggested that the investigated 8-azasteroids of enaminodicarbonyl series under light irradiation undergo phototransformations presumably into derivatives with a gamma-pyridone fragment.
authors.affiliation: Institute of Molecular and Atomic Physics, National Academy of Sciences of Belarus, F. Skaryna Ave. 70, 220072 Minsk, Belarus. bagnich@imaph.bas-net.by
authors.forename: S A
authors.initials: SA
authors.lastname: Bagnich
authors.forename: N N
authors.initials: NN
authors.lastname: Khropik
authors.forename: V N
authors.initials: VN
authors.lastname: Knyukshto
authors.forename: A L
authors.initials: AL
authors.lastname: Mikhalchuk
authors.forename: D B
authors.initials: DB
authors.lastname: Rubinov
mesh_terms: D000042:Absorption; D001378:Azasteroids / Q000737:chemistry* / Q000528:radiation effects; D008163:Luminescent Measurements; D015394:Molecular Structure; D013050:Spectrometry, Fluorescence
chemical_list: D001378:Azasteroids