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Illustration of how control over the redox potentials differs between (A) electrochemistry and (B) photochemistry. Note: EF(cathode) is the applied potential at the cathode and EF(anode) is the applied potential at the anode. Ered = E(PC*/PC•−) or E(PC•+/PC), and Eox = E(PC*/PC•+) or E(PC•−/PC), depending on the situation.
