Stable triplet-state di(cation radica1)s of a N-phenylaniline oligomer

phenyl]-N,N’-diphenyl-1,3-diaminobenzene produces a room temperature stable di(cation radical) with a triplet ground state as evidenced from EPR spectroscopy. A promising strategy towards high-spin organic oligomers and polymers is the concept of a polaronic ferromagnetic chain, based on an alternating sequence of dopable x-conjugated segments and ferromagnetic spin coupling units. 1 Oxidative or reductive doping of such a polymer may result in polaronic (radical ion) segments that are ferromagnetically coupled to yield a high-spin polyradical, possibly leading to an organic magnetic material. The process of redox doping bears a strong resemblance to the well-established doping of fully n-conju-gated polymers to conducting materials. Recently, there is a renewed theoretical2 and experimental3 interest in polaronic ferromagnets. Dougherty et al.3 have examined a number o