FUNCTIONALIZATION OF POLY(P-PHENYLENEVINYLENE) POLYMERS WITH PENDANT NITROXIDE GROUPS

the search for novel organic ferromagnetic polymers we devised synthet ic routes to poly-p-phenylenevinylenes with nitroxide functional group s. Reaction of the Grignard reagent derived from the ROC6H4(CH2)(n)Br precursor (R=CH3, n=4; R=n-C6H13, n=6) with CO2 gave an acid which was chloromethylated and subsequently coupled to the paramagnetic TEMPOL group. The paramagnetic monomers could be readily converted to the dia magnetic hydroxylamine salts to permit full NMR characterization. The paramagnetic monomers were polymerized via the (KOBu)-Bu-t route to th e corresponding PPV.