Experiments of cyclic voltammetry were performed at room temperature using a CH Instruments 630D potentiostat. Solutions in organic solvents were performed under an Ar atmosphere in a glovebox (Vigor SG1200/750TS), while aqueous experiments were performed under N2 atmosphere. iR corrections were conducted with positive feedback compensations for the ohmic drop. Ag/Ag + pseudo-reference electrode was calibrated against Fc + /Fc redox after electrochemical measurements.