The introduction of a secondary interaction is an efficient
strategy
to modulate transition-metal-catalyzed ethylene (co)polymerization.
In this contribution, O-donor groups were suspended on amine–imine
ligands to synthesize a series of nickel complexes. By adjusting the
interaction between the nickel metal center and the O-donor group
on the ligands, these nickel complexes exhibited high activities for
ethylene polymerization (up to 3.48 × 106 gPE·molNi
–1·h–1) with high molecular weight up to 5.59 × 105 g·mol–1 and produced good polyethylene elastomers (strain
recovery (SR) = 69–81%). In addition, these nickel complexes
can catalyze the copolymerization of ethylene with vinyl acetic acid,
6-chloro-1-hexene, 10-undecylenic, 10-undecenoic acid, and 10-undecylenic
alcohol to prepare the functionalized polyolefins.
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