| Abstract: | Time-resolved moderated luminescence of aromatic ketones (benzophenone, aceptophenone) in the presence of neutral and reactive
hydrogeneous foreign gases (ethylene, pentane, triethylamine) is investigated. It is shown that the addition of hydrogeneous
foreign gases leads to strong quenching of the triplet molecules of aromatic ketones. Effectivenesses of such bimolecular
processes as the collision detachment of a hydrogen atom and establishment of vibrational and thermal equilibrium are compared.
It is concluded that the vibrational degrees of freedom of the acceptors, the aromatic ketones, are inactive in the photochemical
process of collision detachment of a hydrogen atom that takes place after the establishment of vibrational equilibrium.
Institute of Molecular and Atomic Physics of the National Academy of Sciences of Belarus, 70, F. Skorina Ave., Minsk, 220072,
Belarus. Translated from Zhurnal Prikladnoi Spektroskopii, Vol. 66, No. 1, pp. 73–77, January–February, 1999. |
