Nickel(II) alpha-diimine catalysts for the atom transfer radical polymerization of styrene

Rachel K. O'Reilly, Michael P. Shaver, Vernon C. Gibson

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

The synthesis and evaluation of Cy[N,N]NiX2 complexes (where Cy[N,N] = C6H11single bondNdouble bondCHsingle bondCHdouble bondNsingle bondC6H11; X = Cl, Br) as catalysts for atom transfer radical polymerization are reported. Cy[N,N]NiCl2 offers poor control over the polymerization of MMA and styrene due to catalyst insolubility. The more soluble bromo catalyst Cy[N,N]NiBr2, promotes rapid styrene polymerization, but with inefficient initiation, affording higher than expected molecular weights based on [M]o/[I]o ratios. Utilizing 1-PEBr results in efficient initiation to give low polydispersities (Mw/Mn ∼ 1.2) and polystyrene molecular weights that correlate with monomer:initiator ratios.
Original languageEnglish
Pages (from-to)4417-4420
JournalInorganica Chimica Acta
Volume359
Issue number13
DOIs
Publication statusPublished - 1 Oct 2006

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