Abstract
Migration of benzophenone triplet excitations in polymethylmethacrylate and methylmethacrylate-styrene copolymer has been studied under steady state excitation by using 1-chloronapthalene as a trap. The excitation energy capture efficiency by a trap has been obtained as a function of the donor concentration at various trap concentrations. Percolation model has been successfully applied to evaluate the critical exponents. The evaluated critical exponents are in very good agreement with three dimensional triplet excitation migration topology in polymethylmethacrylate and two dimensional one in the copolymer.
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