A wavelength-ratiometric fluoride-sensitive probe based on the quinolinium nucleus and boronic acid moiety

In addition to physiological sugars, we discuss the response of aqueous halides as potential interferents, or indeed analytes to be sensed, and show that the new probe responds well to aqueous fluoride in the presence of a high background of other species, such as in a biological cocktail of 50 mM glucose, 50 mM aqueous Cl− and 5 mM fructose.