Taner, BilgeAlici, OnderDeveci, Pervin2020-03-262020-03-2620141061-02781029-0478https://dx.doi.org/10.1080/10610278.2013.830725https://hdl.handle.net/20.500.12395/31172A colorimetric anion sensor -meso-heptaethylcalix[4]pyrrole-meso-3-aminophenyl-p-nitrobenzaldoxime was synthesised and characterised by various spectroscopic techniques. Anion-binding studies were carried out using UV-vis, and H-1 NMR titrations, revealing that the receptor exhibits selective recognition towards F- over other anions. The selectivity for F- among the halides is attributed mainly to the hydrogen bond interaction of the receptor with F-. Receptor showed colour change from colourless to yellow in the presence of tetrabutylammonium fluoride with 1:2 stoichiometry. Cyclic voltammetry studies, carried out in CH3CN, provided evidence of an anion-dependent electrochemical response with F- ion. This response was particularly dramatic in the case of receptor after the addition of approximate to 1equiv. of F- ion.en10.1080/10610278.2013.830725info:eu-repo/semantics/closedAccesscalix[4]pyrrole-based receptoroximeanion recognitioncyclic voltammetryArticle262119124Q3WOS:000328599400007Q2