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, Timothy Smith, William Barton, Mark Newton, Robert J. Deeth, Ivan Prokes, Guy J. Clarkson, David M. Haddleton

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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.

Original languageEnglish
Pages (from-to)2254-2260
Number of pages7
JournalPolymer Chemistry
Volume3
Issue number8
DOIs
Publication statusPublished - Aug 2012
Externally publishedYes

Cite this

Rayner, G., Smith, T., Barton, W., Newton, M., Deeth, R. J., Prokes, I., Clarkson, G. J., & Haddleton, D. M. (2012). A comparison of verdazyl radicals modified at the 3-position as mediators in the living radical polymerisation of styrene and n-butyl acrylate. Polymer Chemistry, 3(8), 2254-2260. https://doi.org/10.1039/c2py20217d