Diaryliodonium salts facilitate metal-free mechanoredox free radical polymerizations.

ABSTRACT: Mechanically-induced redox processes offer a promising alternative to more conventional thermal and photochemical synthetic methods. For macromolecule synthesis, current methods utilize sensitive transition metal additives and suffer from background reactivity. Alternative methodology will offer exquisite control over these stimuli-induced mechanoredox reactions to couple force with redox-driven chemical transformations. Herein, we present the iodonium-initiated free-radical polymerization of (meth)acrylate monomers under ultrasonic irradiation and ball-milling conditions. We explore the kinetic and structural consequences of these complementary mechanical inputs to access high molecular weight polymers. This methodology will undoubtedly find broad utility across stimuli-controlled polymer

SUBMITTER: Zeitler SM 

PROVIDER: S-EPMC8985515 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature