A novel photo atom transfer radical polymerization of methyl methacrylate
Abstract
Photo atom transfer radical polymerization (ATRP) of methyl methacrylate (MMA) was realized with a novel photo initiating system, 2,2-dimethoxy-2-phenylacetophenone (DMPA)/ferric tri(N,N-diethyldithiocarbamate) [Fe(dtc)3], which proceeds with DPMA as the photo initiator, Fe(dtc)3 as the catalyst and dtc as a reversible transfer group, and is halogen and ligand free; well-defined polyMMA was prepared and the polymerization was found to involve a reverse ATRP mechanism.