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endo-Selective (3+2) cycloaddition polymerizations of nitrone monomers with olefins utilising high pressure conditions

Goodall, G.W., Cosstick, K., Richards, S.C. and Hayes, W. (2008) endo-Selective (3+2) cycloaddition polymerizations of nitrone monomers with olefins utilising high pressure conditions. European Polymer Journal, 44 (6). pp. 1881-1890. ISSN 0014-3057

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To link to this article DOI: 10.1016/j.eurpolymj.2007.11.031

Abstract/Summary

A high pressure mediated (3+2) cycloaddition polymerization strategy has been employed to afford linear poly(isoxazolidine) architectures. Under these high pressure conditions this cycloaddition process was found to afford primarily endoheterocycles which when translated to the polymerization should ultimately affect the tacticity and resultant properties of the polymer. The stereoselectivity occurred as a result of a lower volume of activation for the endo-transition state and the application of a 'type-I' regime (HOMODipole-LUMODipolarophile) cycloaddition process that features secondary orbital interactions within the extended molecular orbitals. A variety of linker segments were employed in an attempt to affect the physical properties of the polymeric cycloadducts such as T-g and solubility in order to tailor these materials for use in coating applications. (C) 2007 Elsevier Ltd. All rights reserved.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Life Sciences > School of Chemistry, Food and Pharmacy > Department of Chemistry
ID Code:11279
Uncontrolled Keywords:cycloaddition, polymerization, poly(isoxazolidine), nitrone , FREE-RADICAL POLYMERIZATION, CYCLOADDITION REACTIONS, 1,3-DIPOLAR CYCLOADDITIONS, BIOLOGICAL-ACTIVITY, NITRILE OXIDES, POLYMERS

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