Isoprene-Assisted Radical Coupling of(Co)polymers Prepared by Cobalt-Mediated Radical Polymerization

摘要

Controlled radical polymerization(CRP)techniques are tools of choice to prepare well-defined macromolecules with predictable molar masses(M_n)and low polydispersity(M_w/ M_n).These methods are based on the temporary deactivation of the propagating centers to preserve them from irreversible termination.Reactivation of the protected radicals can be used to end-functionalize macromolecules or polymerize other monomers leading to multiblock copolymers.Although radical coupling reactions must be minimized along the CRP process, the development of innovative methods able to promote on demand the selective self-coupling of two radical polymer chains would open novel synthetic perspectives.