Answers are grounded in this paper and cite their sources.
Fishing for KF: Potassium fluoride and chloride salts can be extracted from aqueous media using poly(methyl methacrylate)s containing pendant calix[4]pyrrole and crown ether groups (see picture). These polymers are able to extract these salts much more efficiently than calixpyrrole, crown ether, linked crown ether calixpyrrole monomers, polymers containing either recognition unit, or poly(methyl methacrylate) controls.
No takes yet. Share an insight, caveat, or question.
Aydogan et al. (2008) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: