Benzothiadiazoles and Dipyrrolyl Quinoxalines with Extended Conjugated Chromophores−Fluorophores and Anion Sensors

Abstract

5,8-Diaryl-2,3-dipyrrolylquinoxaline materials display anion-induced changes in color and fluorescence quenching, thus acting as potential sensors for inorganic anions with affinity for fluoride and dihydrogenpyrophosphate. Such sensors in polyurethane matrix allow for colorimetric screening of aqueous anion solutions.