An original copper-phenolate complex, mimicking the active center of galactose oxidase, featuring a pyrene group was synthesized. Supramolecular pi-stacking allows its efficient and soft immobilization at the surface of a Multi-Walled Carbon Nanotube (MWCNT) electrode. This MWCNT-supported galactose oxidase model exhibits a 4 H(+)/4 e(-) electrocatalytic activity towards oxygen reduction at a redox potential of 0.60 V vs. RHE at pH 5.

Unprotected mononuclear PMP-pyrene copper complexes were designed to be immobilized at multi-walled carbon nanotube (MWCNT) electrodes and form dinuclear bis(µphenolato) complexes on surface. These complexes exhibit high ORR activity of 12.7 mA cm -2 and onset potentials of 0.78 V vs. RHE. The higher activity of these complexes, as compared to mononuclear complexes with bulkier groups, is induced by the favorable early formation of a dinuclear catalytic specie on MWCNT.

An original copper-phenolate complex, mimicking the active center of galactose oxidase,featuring apyrene group was synthesized. Supramolecular pi-stacking allows its efficient and soft immobilization at the surface of aM ulti-Walled Carbon Nanotube (MWCNT) electrode.T his MWCNT-supported galactose oxidase model exhibits a4 H + /4 e À electrocatalytic activity towards oxygen reduction at aredox potential of 0.60 Vv s. RHE at pH 5.

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