Selective NaNO2 recognition by a simple heteroditopic salt receptor based on l-ornithine molecular scaffold

Abstract

This paper describes the development of a simple heteroditopic salt receptor consisting of aza-18-crown-6 (a cation binding domain), nitrophenylurea (an anion binding domain) and an additional metacrylamide group appended to the carboxylic, α-amine and δ-amino groups of L-ornithine. Detailed binding studies showed that this receptor is capable of effectively and selectively binding NaNO₂ salt.