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Review | Regular issue | Vol 41, No. 12, 1995, pp.2827-2873
Published online, 1st January, 1970
DOI: 10.3987/REV-95-469
Chemistry of Persistent Free Bi- and Polyradicals

Mohab-Eddine Brik

*Laboratoire de Chimie Structurale Organique, ICMO URA CNRS 1384, Bat 410, Université de Paris-Sud, 91405 Orsay Cedex, France

Abstract

The aim of this paper is to provide an overview of important developments in the chemistry and the use of persistent free bi- and polyradicals to study chemical and biological model systems by electron paramagnetic resonance (epr) or as materials for physical purposes. The paper also discusses the different ways used to synthesize these molecules by structure modifications of carboxylic and heterocyclic nitroxides as well as their diamagnetic precursors. The review tries to sum up our knowledge of these strong paramagnetic species with the aim of drawing the reader’s attention to their application in recent fields of physics, chemistry, biochemistry, biology and and medical radiology including magnetic resonance imaging (mri) and more recently electron spin resonance imaging (esri).