Step-growth radical addition-coupling polymerization (RACP) for synthesis of alternating copolymers

摘要

We report a new type of step-growth radical addition-coupling polymerization (RACP) involving consecutive addition of carbon-centered radical derived from α,α′-dibromo dibasic ester to Ni = O double bond of C-nitroso compound followed by cross-coupling of carbon-centered radical and in situ formed nitroxyl radical, which produces alternating copolymers with high molecular weight and unimodal molecular weight distribution from saturated and unsaturated monomers. We develop a new type of step-growth radical addition-coupling polymerization (RACP) involving consecutive addition of carbon-centered radical derived from α,α′-dibromo dibasic ester to NO double bond of C-nitroso compound followed by cross-coupling of carbon-centered radical and in situ formed nitroxyl radical, which produces alternating copolymers with high molecular weight and unimodal molecular weight distribution from saturated and unsaturated monomers.