Chi-How Peng (Taiwan National Tsinghua University)


Location: 141 McCourtney Hall

In our group, we have systematically studied the cobalt mediated radical polymerization (CMRP) and established the mechanism model associated with the thermodynamic and kinetic parameters to correlate the relationship between reduction potential, equilibrium constant of cobalt(II) and organo-cobalt(III), and control mechanism. We also combined CMRP and atom transfer radical polymerization (ATRP) to overcome the barrier of the preparation of conjugated-unconjugated block copolymers and obtained the block copolymers of poly(vinyl acetate)-b-poly(methyl methacrylate) and poly(vinyl acetate)-b-polystyrene by a direct chain extension process. The linear increased molecular weight and relatively narrow molecular weight distribution observed during the polymerization of both blocks demonstrated that the polymeric products were formed under well-controlled processes.