Answers are grounded in this paper and cite their sources.
Anthraquinone derived oxalamide gelator 1 forms with aromatic solvents and alcohols very stable gels which selectively respond to the presence of fluoride anion by colour change and/or gel-to-sol transition.
No takes yet. Share an insight, caveat, or question.
Džolić et al. (2007) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: