Fig. 5. Time-dependent difference spectra of electrochemically oxidised (a) Et₈L² and (b) thin film of MFM-180. Potentials are reported vs. Fc⁺/Fc. The blue trace in (b) indicates the point when concentration of the oxidised species [MFM-180]˙⁺ is highest (∼8 min), while the red trace indicates the final concentration after ∼15 min.