Answers are grounded in this paper and cite their sources.
A small array was obtained from three reactive cruciform fluorophores in six different solvents. The array discerned 10 different aromatic carboxylic acids by protonation-induced fluorescence shifts, which were recorded by digital photography. This simple array can discern acids that have closely spaced pK(a) values.
No takes yet. Share an insight, caveat, or question.
Davey et al. (2011) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: