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A new Schiff base compound, 5-(dimethylamino)-N′-(2-hydroxybenzylidene)naphthalene-1-sulfonohydrazide (R), has been synthesized, characterized, and employed as a selective fluorescence receptor for the recognition of sulfate anions. UV–vis absorption, fluorescence emission, 1 H NMR spectra and DFT calculation studies on the system have been carried out to determine the nature of the interactions...
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