The proposed mechanisms for such photoinduced dehalogenation involve either an oxidative quenching cycle or a consecutive photoinduced electron transfer (conPET) process. In the former, direct photoreduction of the aryl halide occurs from the PC*, with closure of the photocatalytic cycle proceeding through oxidation of the sacrificial amine by PC •+ . In contrast, the conPET mechanism involves reductive quenching of the PC* by the sacrificial amine, generating PC •-, which itself is then photoexcited. The [PC •-]* then reduces the aryl halide, regenerating the ground state PC.