Tetraelectronic O2 Reduction

However, electronic factors and/or the lack of suflflcient number of electrons could be limiting the tetraelectronic process, and the study of some peripherally 

The electrocatalytic activity of CoTCP films was evaluated by RDE and RRDE voltammetry and eqs. 6.1 and 6.2, 

0 X 10 molcm ). The comparative effect of the insertion of methyl groups at 2,6-positions keeping the phenyl rings orthogonal to the prophyrin ring is shown in (C) and (D), respectively. 

In conclusion, FeP/Cu and peripherally metallated CoTPyPs such as CoTCP were found to be excellent catalysts for the four-electron reduction of O2 to H2O in slightly acidic or neutral aqueous solutions. The first one was conceived as a truly biomimetic compound while the second are functional models. It is impressive how closely Collman et were able to reproduce the structure and 

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