Selective and tuneable recognition of anions using C3v-symmetrical tripodal urea-amide receptor platforms

Abstract

The synthesis and binding investigations of first generation C(3v)-symmetrical hydrogen bonding urea-amide based tripodal receptors, 1-6, with various anions such as acetate, phosphate, sulfate and chloride in DMSO-d(6) are presented. Analysis of the (1)H NMR titrations of 1-6 showed on all occasions the selective formation of 1 : 1 stoichiometries.