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Organocatalyzed Atom Transfer Radical Polymerization Catalyzed by N-Aryl Phenoxazines under Air

Abstract: Organocatalyzed atom transfer radical polymerization (O-ATRP) was performed under air using core modified N-aryl phenoxazines as photoredox catalysts (PCs) to synthesize poly(methyl methacrylate) in a controlled fashion with initiator efficiency (I* = Mn,theo/Mn × 100) ranging from 84 to 99% and dispersity being ∼1.2–1.3. Reduction of the reaction vial headspace was key for enabling…