Kinetics of photoreactions with participation of molecular oxygen in Langmuir-Blodgett films

The influence of molecular oxygen on the luminescence of organic molecules (dyes and aromatic hydrocarbons) in Langmuir-Blodgett films is studied. Experimental luminescence kinetics curves are compared with theoretical curves calculated in terms of different mathematical models. It is shown that the best agreement with experiment is achieved using a model that takes into account the frontal diffusion of excited oxygen molecules to the interphase surface.