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Published
: 2022-09-17
Does the back electron transfer affect the rate of photoinduced free radical polymerization?
Abstract
The specific behaviors of monomeric electron acceptor-electron donor bridged molecules and of polymeric initiator-coinitiator systems tested as free radical polymerization photoinitiating systems were observed. The obtained experimental and theoretical results suggest that the back electron transfer process probably does not control the rate of photoinitiated polymerization going with initiators tested. The phenomena observed more likely results from a different proton transfer between Rose bengal radical anion and a tertiary aromatic amine radical cation. This can be deducted on the basis of Marcus theory, describing the kinetics of photoinduced intermolecular and intramolecular electron transfer processes, and laser flash photolysis measurements.
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Pączkowski, J., Pietrzak, M., & Paczkowska, B. (2022). Does the back electron transfer affect the rate of photoinduced free radical polymerization?. Polimery, 48(11-12), 765–773. Retrieved from https://polimery.ichp.vot.pl/index.php/p/article/view/1922
