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成功合成了二硫桥键相连的钴卟啉二聚体2Co.通过循环伏安电化学方法测试,在无水二氯甲烷溶剂中,钴卟啉二聚体展示了3个氧化和2个还原峰,表明此钴卟啉二聚体可以稳定多重负/正电荷.详细研究了在酸性条件下的钴卟啉二聚体的电催化氧还原性能.钴卟啉二聚体的电催化氧还原显示了高稳定性和高活性,测得转移电子数为3.5～3.6之间.钴卟啉二聚体的电催化氧还原性能说明通过二硫键对钴卟啉单体二聚化可以提高钴卟啉的电催化氧还原性能.“,”A disulfide-bridged dimeric cobalt porphyrin 2Co has been successfully synthesized.The cyclic voltam-mogram(CV)curves of 2Co exhibited three oxidation and two reduction potentials in CH2Cl2,indicating that the 2Co enable stabilizing multi-negative and positive charges.The ORR catalytic property of 2Co in acid media were investigated.The reduction of O2 using the dimer 2Co as catalyst showed high stability and activity to give the high-er the value of transferred electrons number(n)between 3.5 and 3.6 under dioxygen.The catalytic performance of 2Co indicates that dimerization of cobalt porphyrins have a slightly positive influence on the catalytic properties for oxygen reduction reactions(ORRs)in the acidic medium.