Abstract

We have synthesized and evaluated a calix[4]arene-based bifunctional receptor containing amide and benzoxazolinone units for ionic recognition. Absorption properties of this receptor have been studied, and the results revealed selectivity in the recognition of copper (Cu2+), fluoride (F-), cyanide (CN-), and acetate (CH3COO- ) ions. Its binding ability and the mechanism as bifunctional receptor were elucidated using advanced techniques such as 1HNMR and FT-IR analysis. The results showed that receptor amide bridge played a critical role in the binding of copper (II), acetate, cyanide, and fluoride ions. These findings suggest that calix[4]arene-based bifunctional receptor has promising potential as an ion sensor for detecting these specific ions in environmental and biological samples. This research contributes to the ongoing exploration of bifunctional receptors and their potential applications in the field of supramolecular chemistry.