nickel-catalyzed polymerizations: mechanistic studies & new reaction development anne j. mcneil

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Initial Rate. [Monomer]. Nickel-Catalyzed Polymerizations: Mechanistic Studies & New Reaction Development Anne J. McNeil Department of Chemistry and Macromolecular Science and Engineering Program University of Michigan, Ann Arbor, MI 48109-1055. - PowerPoint PPT Presentation

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  • Nickel-Catalyzed Polymerizations: Mechanistic Studies & New Reaction DevelopmentAnne J. McNeilDepartment of Chemistry and Macromolecular Science and Engineering ProgramUniversity of Michigan, Ann Arbor, MI 48109-1055Conjugated polymers (CPs) are the active components of numerous emerging technologies, including photovoltaics, PLEDs, and sensors.Traditionally CPs are synthesized via step-growth methods. Chain-growth methods for preparing CPs were discovered simultaneously by Yokozawa and McCullough in 2004. However the scope is limited. We are using a combination of rate and spectroscopic studies to elucidate the mechanism of polymerization so it can be generalized to a wider variety of substrates and applied to the synthesis of new polymer microstructures.Key Results from First Year of Funding31P NMR spectrum of Ni(II)-biaryl31P NMR spectrum of Ni(II)aryl(halide) Rate studies showing the reaction is zero order in monomerConjugated Polymers2004 - McCullough and Yokozawa2006 - Yokozawa