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Issue 8, 2012
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A comparison of verdazyl radicals modified at the 3-position as mediators in the living radical polymerisation of styrene and n-butyl acrylate†

Georgina Rayner,a   Timothy Smith,b   William Barton,b   Mark Newton,c   Robert J. Deeth,a   Ivan Prokes,a   Guy J. Clarksona  and  David M. Haddleton*a  
Author affiliations

* Corresponding authors

a Department of Chemistry, The University of Warwick, Gibbet Hill Road, Coventry, UK CV4 7AL
E-mail: D.M.Haddleton@warwick.ac.uk
Fax: +44 (0)2476 528267
Tel: +44 (0)2476 523256

b Lubrizol Corporation, Hazelwood Research Centre, Derby, UK DE56 1QN

c Department of Physics, The University of Warwick, Gibbet Hill Road, Coventry, UK CV4 7AL

Abstract

Four verdazyl radicals, with varying substituents at the 3-position, were synthesised and used to prepare unimolecular initiators for use in the stable free radical mediated living radical polymerisation of styrene and n-butyl acrylate. The addition of bulky substituents with differing electronic structures at the 3-position of the ring was investigated and the effects of these substituents on the properties of the verdazyl radical studied. The nature of the substituent was discovered to affect the rate and characteristics of polymerisation. The styrene and n-butyl acrylate homopolymers were chain extended to provide evidence of the verdazyl radical as the end group of the polymers.

Graphical abstract: A comparison of verdazyl radicals modified at the 3-position as mediators in the living radical polymerisation of styrene and n-butyl acrylate

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Article information

https://doi.org/10.1039/C2PY20217D
Submitted
11 Apr 2012
Accepted
09 May 2012
First published
10 May 2012
Polym. Chem., 2012,3, 2254-2260
Article type
Paper
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A comparison of verdazyl radicals modified at the 3-position as mediators in the living radical polymerisation of styrene and n-butyl acrylate

G. Rayner, T. Smith, W. Barton, M. Newton, R. J. Deeth, I. Prokes, G. J. Clarkson and D. M. Haddleton, Polym. Chem., 2012, 3, 2254
DOI: 10.1039/C2PY20217D

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