The electrochemical properties of tris(2,2′-bipyridine)ruthenium (II) dichloride ([Ru(bpy)3]2+), andtris(1,10-phenantroline)ruthenium (II) dichloride ([Ru(phen)3]2+) complexes inserted in Nafionmembranes were studied in the ionic liquid (IL) 1-hexyl-3-methylimidazolium hexafluorophosphate(HMImPF6). The wide potential window provided by the IL, allows for the study of the redox propertieswithout using organic solvents. The voltammetric patterns revealed reversible reduction waves for bpyand phen ligands and for the oxidation signal of Ru(II)/Ru(III) similar to those observed in aqueous andorganic solvents.
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