A selective and discriminating noncyclic receptor for HSO4- ion recognition

Abstract

The anion recognition ability of a novel noncyclic dipodalamine phenol receptor L was evaluated using absorption and fluorescence spectroscopic methods. The absorption and fluorescence spectra of L have shown a red shift upon the addition of HSO4 over other surveyed anions in water. The association constant (Ka) of L with HSO4 was calculated using Benesi–Hildebrand plot and Scatchard plot methodology, and it was found to be 3.1 0.2 103 M 1 .