Abstract
Three half-metallocene ruthenium(III) complexes, [(Cp*RuCl2)PPh2R] (R = C6H4–OCH3,C6H5, and C5H5N were prepared. These Ru(III) complexes polymerized MMA successfully via ATRP in the absence of any reducing agent or free radical initiator. All of three complexes produced a linear relationship between ln[Mn]0/[Mn] versus the reaction time and the living properties through a linear increase in molecular weight versus conversion. Especially, well-defined PMMA and high initiation efficiency were obtained in the presence of 10 ppm catalysts.
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