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SP–PLP–EPR Measurement of CuII-Mediated ATRP Deactivation and CuI‑Mediated Organometallic Reactions in Butyl Acrylate Polymerization

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journal contribution
posted on 23.06.2016, 14:21 by Nicolai Soerensen, Hendrik Schroeder, Michael Buback
The SP–PLP–EPR technique has been used to measure CuII-mediated ATRP deactivation and CuI-mediated organometallic reactions for butyl acrylate (BA) polymerization. The deactivation rate is by more than 1 order of magnitude higher than in dodecyl methacrylate (DMA) polymerization, thus enabling well-controlled ATRP despite the enhanced BA propagation rate. The organometallic reaction of CuI with BA radicals was found to play a role only with highly active Cu catalysts, as demonstrated for the Cu/TPMA-mediated ATRP of BA.