Advances in nickel catalyzed controlled/living radical polymerization reactions
Controlled/living radical polymerization reactions are developed to take the advantages of mild reaction conditions,well controlled reaction processes and accessible modification of polymer structures to build a variety of organic polymer materials with polar monomers as the starting materials in recent years,of which the fundamental mechanism is the reversible activation/deactivation between radical intermediates and transition-metal catalysts/chain transfer reagents.Because of the different oxidation states and the variable polymerization mechanisms,nickel catalysts have unique advantages in controlled/living radical polymerization.This article reviews the structure of catalysts,polymerization mechanisms and the structure of products of nickel catalyzed atom-transfer radical polymerization(ATRP)and organometallic mediated radical polymerization(OMRP).The future development direction and application prospects of controlled/living radical polymerization are prospected.
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