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A gold-supported, self-assembled monolayer containing imidazole termini provides axial binding sites for the diruthenium cofacial diporphyrins (μ-N2)Ru2(DPA)(CH3CN) and (μ-N2)Ru2(DPB)(CH3CN). These electrode-bound molecules electrocatalytically reduce dioxygen in a well-characterized environment. The SAM environment makes it easier to study the effect that the eletrode−catalyst interactions are having on the catalysis compared with those of the traditional environment of EPGE.
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Collman et al. (1996) studied this question.
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