Review Article
Advances in Organocatalyzed Atom Transfer Radical Polymerization
Figure 6
PC development for O-ATRP. (a) Polymerization of MMA to well-defined polymers by using photoredox O-ATRP driven by sunlight. (b) Structures of the diphenyl dihydrophenazine PCs 1 to 4 used in this study. (c) A proposed mechanism for ATRP mediated by a PC via photoexcitation to 1PC∗, intersystem crossing (ISC) to the triplet state 3PC∗, ET to form the radical cation doublet 2PC•+, and back ET to regenerate PC and reversibly terminate polymerization. (Adapted with permission from Ref. [44]).
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