A Highly Selective Chemosensor for Naked-Eye Detection of Fluoride and Aluminium(III) Ions Based on a New Schiff Base Derivative

Author:

Orojloo Masoumeh,Amani Saeid

Abstract

A new chromogenic receptor, 4-((2,4-dichlorophenyl)diazenyl)-2-(3-hydroxypropylimino)methyl)phenol, has been designed and synthesized for quantitative and low-cost detection of various biological anions and cations. The dye was characterized by elemental analyses, infrared, UV-visible spectroscopy, and NMR spectroscopy. The chemosensor showed visual changes towards anions, such as F– and H2PO4–, in DMSO and towards cations, such as Al3+, Cu2+, Fe3+, and Cr3+, in DMSO/water (9 : 1). The anion recognition property of the receptor via proton transfer was monitored by UV-visible titration and 1H NMR spectroscopy. The binding constant (Ka) and stoichiometry of the host–guest complexes formed were determined by the Benesi–Hildebrand (B–H) plot and Job's method, respectively.

Publisher

CSIRO Publishing

Subject

General Chemistry

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