Tripodal cyanurates as selective transmembrane Cl- transporters.

Tris-carboxyamide and tris-sulfonamide-based anion transporters with a cyanuric acid core are reported. Interestingly, Cl- ion binding and transmembrane transport properties of carboxyamides are better compared to those of their tris-sulfonamide analogs. The carboxyamide derivatives act as mobile carriers of Cl- and exchange anions via antiport mechanism.