nitroxide radical. The polyradicals were chemically stable, and their spin concentration was increased to 0.8 spin/unit. A SQUID measurement which included the corresponding diradicals and triradicals indicated that a partial, but strong, intramolecular ferromagnetic coupling was established through the conjugated backbone, despite a spin defect in the side radical moiety, for the poly(1,2- phenylenevinylene)
聚[[2- 或 4-[N-叔丁基-N-(三乙基甲
硅烷氧基-或叔丁基二甲基甲
硅烷氧基)
氨基]-1,4- 或 1,2-亚苯基]亚
乙烯基]通过聚合 4- 或 2-
溴- 2-或4-[N-叔丁基-N-(三乙基甲
硅烷氧基-或叔丁基二甲基甲
硅烷氧基)
氨基]
苯乙烯分别与
钯催化剂。它们被去保护和
化学氧化以产生带有 2-或 4-取代的内置
氮氧自由基的聚(1,4-或 1,2-亚苯基亚
乙烯基)。多自由基
化学性质稳定,它们的自旋浓度增加到 0.8 自旋/单位。包括相应双自由基和三自由基的 SQUID 测量表明,尽管侧基部分存在自旋缺陷,但聚(1,