Neutral cryptand-like cyclic peptide–thiourea receptors for selective recognition of sulphate anions in aqueous solvents
作者:Philip G. Young、Jack K. Clegg、Katrina A. Jolliffe
DOI:10.1080/10610278.2011.622388
日期:2012.2.1
The synthesis and anion complexation properties of two hybrid cyclic peptide–thiourea cryptands have been studied. Receptors encapsulate sulphate via nine hydrogen bonds and show selectivity for this anion in solvent mixtures containing up to 20% H2O/deuterodimethyl sulphoxide. In this solvent mixture, chloride, bromide and acetate are encapsulated via six hydrogen bonds and with lower affinity than