Upper-rim alternately tethered α-cyclodextrin molecular receptors: synthesis, metal complexation and interfacial behavior

Abstract

Three novel α-cyclodextrin tripods bearing three ureido-bipyridyl tethers symmetrically distributed on their upper rim in the A,C,E positions and alternated with hydroxyl, acetyl or lauryl moieties were prepared by the tandem Staudinger–Aza–Wittig alias“phosphine imide” strategy. The functionalisations on the cyclodextrin upper rim allowed a fine-tuning of the metal complexation and amphiphilic properties.