A highly active Ni(II)-triadamantylphosphine catalyst for ultrahigh-molecular-weight polyethylene synthesis

Here we report that the tri-1-adamantylphosphine-nickel complex [Ad(3)PNiBr(3)](-)[Ad(3)PH](+) upon activation with an alkylaluminoxane catalyzes the polymerization of ethylene to ultrahigh-molecular-weight, nearly linear polyethylene (M(n) up to 1.68 × 10(6) g mol(−1)) with initial activities reach...

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Detalles Bibliográficos
Autores principales: Kocen, Andrew L., Brookhart, Maurice, Daugulis, Olafs
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6347634/
https://www.ncbi.nlm.nih.gov/pubmed/30683873
http://dx.doi.org/10.1038/s41467-019-08309-8
Descripción
Sumario:Here we report that the tri-1-adamantylphosphine-nickel complex [Ad(3)PNiBr(3)](-)[Ad(3)PH](+) upon activation with an alkylaluminoxane catalyzes the polymerization of ethylene to ultrahigh-molecular-weight, nearly linear polyethylene (M(n) up to 1.68 × 10(6) g mol(−1)) with initial activities reaching 3.7 million turnovers per h(−1) at 10 °C. Copolymerizations of ethylene with α-olefins such as 1-hexene and 1-octadecene, as well as tert-butyldimethyl(dec-9-en-1-yloxy)silane give the corresponding copolymers with no decrease in activity.

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