A BODIPY-indole conjugate as a colorimetric and fluorometric probe for selective fluoride anion detection

A BODIPY-indole conjugate, 1, behaves as a colorimetric and fluorometric probe for selective and sensitive detection of F−. Compound 1 interacts with F− in a 1:1 stoichiometry via a hydrogen bonding interaction between the indolic NH proton and F−, leading to clear color change from blue to green and quenching of orange fluorescence.