Aryl-triazole foldamers with ethynyl spacers as effective receptors for halides and oxyanions

Abstract A new aryl-triazole receptor incorporating ethynyl spacer was readily constructed. By using UV–Vis spectroscopic titration, the foldamers were proved to be capable of binding various shaped anions ( n Bu 4 N + A − , A = Cl, Br, I, NO 3 , HSO 4 , H 2 PO 4 and AcO) with high affinities but a low selectivity.