Issue 14, 2022

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 polymerization reactions and adaptive material design.

Graphical abstract: Diaryliodonium salts facilitate metal-free mechanoredox free radical polymerizations

Supplementary files

Article information

Article type
Edge Article
Submitted
17 Jan 2022
Accepted
15 Mar 2022
First published
16 Mar 2022
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY-NC license

Chem. Sci., 2022,13, 4131-4138

Diaryliodonium salts facilitate metal-free mechanoredox free radical polymerizations

S. M. Zeitler, P. Chakma and M. R. Golder, Chem. Sci., 2022, 13, 4131 DOI: 10.1039/D2SC00313A

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