The ground-state redox potentials of the PCs in the four solvents were determined using a combination of cyclic voltammetry (CV) and differential pulse voltammetry (DPV). While both MeCN and DCM are useful solvents for electrochemistry on account of their wide redox window, THF and DMF both have narrow electrochemical windows and so oxidation processes cannot necessarily be captured in these solvents (Figure ). As a result, the ground-state oxidation potential, Eox, could not be obtained for the majority of the PCs in these two solvents.