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A general method for the random copolymerization of vinyl monomers to give low-polydispersity macromolecules with accurate control over molecular weight and chain ends has long been a goal of synthetic polymer chemists. However, many of the traditional methods for controlling polymeric structure, such as anionic, 1 cationic, 2 or group transfer procedures, 3 are not well suited for the preparation of well-defined random copolymers from disparate vinyl monomers, such as styrenics and acrylates. Also, the demanding reaction conditions of anionic or cationic techniques severely limit the compatibility of many functional groups with these techniques. For these reasons, the synthesis of many random copolymers can only be accomplished under normal free-radical procedures where the ability to control macromolecular structure and molecular weight distribution is lacking. Recently, the concept of “living” free …