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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/14251

Title: Enhanced Spin-capturing Polymerization and Radical Coupling Mediated by Cyclic Nitrones
Authors: Ranieri, Kayte
Conradi, Matthias
Chavant, Pierre-Yves
Blandin, Veronique
Barner-Kowollik, Christopher
Junkers, Thomas
Issue Date: 2012
Publisher: CSIRO PUBLISHING
Citation: AUSTRALIAN JOURNAL OF CHEMISTRY, 65 (8), p. 1110-1116
Abstract: A series of cyclic nitrones have been tested for their spin-trapping activity in the enhanced spin-capturing polymerization of styrene and in nitrone-mediated radical coupling reactions. rac-2-Isopropyl-2,3-dimethyl-1-oxy-2,3-dihydro-imidazol-4-one was found to be the most efficient nitrone. The specific polystyrene macroradical addition rate to this nitrone was determined to be 8.0 x 10(3) L mol(-1) s(-1), which is by a factor of 10 higher than for previously studied compounds. Via enhanced spin-capturing polymerization, polymers in the range of oligomers to 30000 g mol(-1) were obtained. A strong dependence of molecular weight on monomer conversion was observed, which can be explained by the high trapping rate. In nitrone-mediated radical coupling, almost ideal coupling of bromine-functional polymers was obtained and the successful introduction of the residual alkoxyamine functionality confirmed.
Notes: [Barner-Kowollik, Christopher] KIT, Inst Tech Chem & Polymerchem, D-76128 Karlsruhe, Germany. [Ranieri, Kayte; Conradi, Matthias; Junkers, Thomas] Univ Hasselt, Inst Mat Res, Polymer React Design Grp, BE-3590 Diepenbeek, Belgium. [Chavant, Pierre-Yves; Blandin, Veronique] Univ Grenoble 1, Dept Chim Mol, UMR 5250, ICMG,CNRS,FR 2607, F-38041 Grenoble 9, France.
URI: http://hdl.handle.net/1942/14251
DOI: 10.1071/CH12182
ISI #: 000308500300010
ISSN: 0004-9425
Category: A1
Type: Journal Contribution
Validation: ecoom, 2013
Appears in Collections: Institute for Materials Research
Organic and Bio-polymer Chemistry

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