Interaction of excited molecules with radicals in polymers under the action of light and radiation

Using photo- and radioluminescence methods, it was shown that the electroni cally excited states of glassy polymer matrices were quenched by macroradic als via mechanisms other than energy transfer. Specific interaction of the radicals with excited molecules, which can be treated as a combination of m igration and spin exchange in the encounter complex, results in an increase in the local concentration of triplet states in the radical neighborhood a nd the trapping of radicals primarily in the form of clusters.