SET-LRP of Methyl Methacrylate Initiated with CCl4 in the Presence and Absence of Air

Single electron transfer-living radical polymerization (SET-LRP) represents a robust and versatile method for the rapid synthesis of macromolecules with defined architecture. The synthesis of poly(methyl methacrylate) via SET-LAP in dimethyl sulfoxide (DMSO) by using CCl4 as initiator is demonstrated in this work. Resorting to a rather simple Cu(0)/Me-6-TREN catalyst a method was established that allowed for the straightforward design of well-defined poly(methyl methacrylate). The reactions were performed at various temperatures (25, 50, 60, and 80 degrees C) and complete monomer conversion could be achieved. The polymerizations obeyed first order kinetic, the molecular weights increased linearly with conversion and the polymers exhibited narrow molecular weight distributions all indicating the livingness of the process. By providing a small amount of hydrazine to the reaction mixture the polymerization could be conducted in presence of air omitting the need for any elaborated deoxygenation procedures. This methodology offers an elegant way to synthesize functionalized poly(methyl methacrylate) with perfect control over the polymerization process as well as molecular architecture. (C) 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 48: 2243-2250, 2010