Abstract
AbstractA novel Schiff base has been derived from condensing 4‐aminoantipyrine with diazotized salicylaldehyde. The derived compound acted as a colorimetric sensor for hazardous aqueous anions like CN−, F−, and CH3COO− among a list of anions. The colorimetric changes were further verified through absorption titrations. The detection limits were of the order of 10−10 M, which makes the sensor significant. The interaction of the anions with the sensor was stoichiometrically 1:1 with good binding constants. The sensor turns out to be a specific turn‐on emission sensor for CN− even in competitive environments. The F− ion sensing ability was extended to the determination of F− in a commercial toothpaste with good results.
Published Version
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