C-13 kinetic isotope effects in the copper(I)-mediated living radical polymerization of methyl methacrylate

Harrisson, S., Rourke, J.P. ORCID: https://orcid.org/0000-0002-8961-1021 and Haddleton, D.M. 2002. C-13 kinetic isotope effects in the copper(I)-mediated living radical polymerization of methyl methacrylate. Chemical Communications (14) , pp. 1470-1471. 10.1039/b203675d

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Abstract

Carbon-13 kinetic isotope effects (KIEs) have been determined for free-radical and copper-mediated living radical polymerizations of methyl methacrylate at 60 °C. While free-radical polymerization shows only one primary 13C KIE, on the least-substituted double bond carbon (k12/k13 = 1.045), two significant KIEs are observed, one on each double bond carbon, for copper-mediated polymerization (k12/k13(H2C[double bond, length as m-dash]) = 1.050, k12/k13([double bond, length as m-dash]C<) = 1.010), showing that copper-mediated living radical polymerization does not propagate via a simple free radical process.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Schools > Chemistry
Publisher:	Royal Society of Chemistry
ISSN:	1364-548X
Last Modified:	28 Apr 2023 13:30
URI:	https://orca.cardiff.ac.uk/id/eprint/155173

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