Poly(1,4- or 1,2-phenylenevinylene)s bearing a 2- or 4-substituted nitroxide radical were synthesized by polymerizing [bromo[N-tert-butyl-N-(trialkylsiloxy)amino]]styrenes with a palladium catalyst. The polyradicals were chemically stable, and their ESR and SQUID measurements indicated an intramolecular and through-bond ferromagnetic coupling.
在
钯催化剂的作用下,通过聚合[
溴[N-叔丁基-N-(三烷基
硅氧基)
氨基]]
苯乙烯,合成了带有 2 或 4 取代亚硝基的聚(1,4-或 1,2-phenylenevinylene)s 。这些多自由基
化学性质稳定,其 ESR 和 SQUID 测量结果表明存在分子内和通键
铁磁耦合。