The electrode was then rinsed with deionized water and acetone. After air drying, the electrode was ready to use. The reference electrode was calibrated with reference to the Fc + /Fc couple, and all potentials reported here are referenced to the potential of this couple (Supporting Information, CV parameter). In situ electrolytic UV-Vis spectra were recorded using an OCEAN HDX spectrometer (OptoSirius Co., Ltd.