The influence of the interaction of carbonyl compounds with the matrix walls on phosphorescence of their solution in porous glasses

We have studied the phosphorescence of solutions of carbonyl compounds in porous glasses. The results of the investigations have shown that the introduction of the above-mentioned compounds into a porous matrix leads to a change in the spectral-kinetic characteristics of their phosphorescence due to the interaction of the activator molecules with the walls of the pores. The character of these changes depends on the nature of the introduced molecules, the properties of the solution used and on the type of porous glass. Analysis of the experimental data enabled us to conclude that the porous glasses used in the work contain two types of adsorption centres the interaction with which leads to different changes in the phosphorescence of carbonyl compounds. It is also shown that the efficiency of activator interaction with the walls of porous glasses decreases with enlargement of side substituents in the activator molecules. The results an also presented of IR-spectroscopic studies of the interaction of molecules with the adsorption centres of the matrix.