A naphthalimide-based 'Pourbaix sensor': a redox and pH driven AND logic gate with photoinduced electron transfer and internal charge transfer mechanisms

A naphthalimide-based AND logic gate displays a fluorescence output in aqueous methanol upon oxidation of the ferrocene moiety and protonation of the tertiary amine. The molecule introduces a 'receptor-spacer-fluorophore-spacer-redox-unit' format for simultaneous monitoring of redox potential and pH.