Logic control of the fluorescence of a new dyad, spiropyran-perylene diimide-spiropyran, with light, ferric ion, and proton: Construction of a new three-input AND logic gate

The fluorescence of a novel dyad with spiropyran and perylene diimide units can be significantly enhanced only under the combined actions of UV light, protons, and ferric ions (see Figure). This behavior corresponds to a new AND gate with three inputs.