Abstract
To identify the features of energy transfer and migration of active particles in microheterogenous polymeric systems the authors have investigated the formation and photochemical reactions of paramagnetic particles in irradiated butadiene-styrene block copolymers and model systems. It is shown that the effectiveness of far-energy migration in such colloidal systems is low. It is concluded that the processes of energy transfer occur between the polystyrene and polybutadiene units present in direct contact. It is shown that on photobleaching the electrons stablized in polystyrene and the polystyrene phase of the block copolymers react with neutral radicals and in the case of block copolymers the electrons may pass into the polybutadiene phase and interact there with allyl radicals.
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