The electrochemical behavior of a covalently functionalized hyperbranched polymer with a vitamin B12 derivative (B12HBP) was investigated by cyclic voltammetry and UVvis spectroscopy combined with bulk electrolysis in N,Ndimethylformamide.The B12HBP showed excellent properties for a homogeneous catalyst such as the good accessibilities of the cobalt centers in B12HBP to an electrode and substrates and the maintained supernucleophilicity of the Co(I) species to alkyl halides. The cobalt-methylated B12HBP was newly synthesized, and its electrochemical behavior was also investigated by cyclic voltammetry. Furthermore, B12HBP was used as an electrochemical degradation catalyst for 1,1,1-trichloro-2,2-bis(4-chlorophenyl)ethane (DDT). This work presents the first electrocatalysis study of a catalytically active transition-metal complex on a homogeneous dendritic support and investigates the suitability of the present B12HBP system for electrochemical dehalogenation.
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