3-Benzoyl-7-diethylamino-5-methyl-1-phenyl-1H-quinoxalin-2-one: an effective dyeing photoinitiator for free radical polymerization

Abstract

3-Benzoyl-7-diethylamino-5-methyl-1-phenyl-1H-quinoxalin-2-one (ChAD) is, in the presence of the effective electron donors, good dyeing free radical polymerization initiator. Photoinitiation ability of the tested dye strongly depends on the type of N-phenylglycine derivative used as an electron donor. The results show that the rate of polymerization can be described as the linear function of either free energy of activation for electron transfer process (ΔGET0) or as a linear dependence of the reactivity of the free radicals obtained as a result of secondary processes that are following electron transfer.