SP–PLP–EPR Measurement of Cu<sup>II</sup>-Mediated ATRP Deactivation and Cu<sup>I</sup>‑Mediated Organometallic Reactions in Butyl Acrylate Polymerization Nicolai Soerensen Hendrik Schroeder Michael Buback 10.1021/acs.macromol.6b00760.s001 https://acs.figshare.com/articles/journal_contribution/SP_PLP_EPR_Measurement_of_Cu_sup_II_sup_-Mediated_ATRP_Deactivation_and_Cu_sup_I_sup_Mediated_Organometallic_Reactions_in_Butyl_Acrylate_Polymerization/3459008 The SP–PLP–EPR technique has been used to measure Cu<sup>II</sup>-mediated ATRP deactivation and Cu<sup>I</sup>-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 Cu<sup>I</sup> 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. 2016-06-23 14:21:12 organometallic reactions DMA measure Cu II deactivation rate dodecyl methacrylate BA propagation rate butyl acrylate Butyl Acrylate Polymerization Cu catalysts organometallic reaction BA radicals Mediated ATRP Deactivation SP ATRP deactivation Cu II 1 order