SYNTHESIS AND SPIN-TRAPPING PROPERTIES OF POLY[N-(P-VINYLBENZYLIDENE)-TERT-BUTYLAMINE N-OXIDE] AND ITS COPOLYMERS AS A SOLID SPIN TRAP

A polymer-supported spin trap, poly[N-(p-vinylbenzylidene)-tert.-butyl amine N-oxide] (polyPBN), was synthesized by an improved procedure. It s copolymers with styrene or methyl methacrylate (copolyPBNs) were als o prepared, and their spin-trapping abilities were investigated. Thus, several free radicals generated by the thermal decomposition of radic al precursors reacted with the solid polymers dispersed in p-xylene an d heptane. Both polyPBN and copolyPBN in the solid state can capture c arbon- and oxygen-centered radicals in the heterogeneous phase (solid- liquid system).