Abstract
A new chromogenic sensor, 1,10-phenanthroline affixed to the 2,4-dinitrophenylhydrazine moiety, was synthesized and characterized. Among anions added into it, F-, AcO- and H2PO4- ions resulted in the color changes from light brown to dark brown, while other tested anions did not induce color changes. Meanwhile, the anion-binding ability has been investigated by UV-vis and 1H NMR titrations in DMSO-d6. The sensor displays an even stronger binding to F- over AcO- and H2PO4- ions with 1:1 stoichiometry through hydrogen bonding.
Keywords: Colorimetric, anion sensor, supramolecular chemistry, 1,10-phenanthroline, UV-vis, 1H NMR, DMSO-d6, fluorosis, Varian UNITY Plus-400, MHZ Spectrometer. ESI-MS, Shimadzu UV-2450 Spectrophotometer, tetrabutylammonium, host-fluoride complex