Abstract

We have prepared the amphiphilic molecular catalyst [CoIII(LOC18)(pyrr)2]ClO4 (1), where LOC18 is the deprotonated form of N, N'-[4,5-bis(octadecyloxy)-1,2-phenylene]dipicolinamide. Species 1 can be anchored onto a carbon black support to yield the assembly 1@CB, which can catalyze water oxidation at an affordable onset overpotential of 0.32 V, with a current density of 10 mA/cm2 at 0.37 V. Moreover, 1@CB displays TOF = 3850 h-1. A mechanism is proposed based on the experimental and density-functional-theory-calculated data.

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