Abstract
Fluorescent “turn-on” method was attempted for sensitive and selective recognition of F− and AcO− ions based on uracil possessing sensor, which was synthesized by single step reaction and characterized by using common spectroscopic techniques. The presence of sensed anions in acetonitrile solution of chemosensor 1 caused approximately 60-fold (F−) and 50-fold (AcO−) enhancement in fluorescence intensity at 432 nm. The complexation behaviour of chemosensor 1with detected anions was established by 1H NMR titration studies, which pointed to the binding of the F−/AcO− ion with hydrogen of amine group of uracil to expedite its detection. Computational calculations (TD-DFT) were performed for 1-F−/AcO− to obtain theoretical evidences to the experimental results. Also, the practical applicability of the chemosensor 1 has been successfully examined for detection of boric acid in commercial antiseptic eye-wash solution.
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