Schiff base derived from salicylaldehyde‐based azo dye as chromogenic anionic sensor and specific turn‐on emission sensor for cyanide ion | Zendy

Chakraborty Nilanjan | Zendy; Chakraborty Arijit | Zendy; Das Suman | Zendy

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Schiff base derived from salicylaldehyde‐based azo dye as chromogenic anionic sensor and specific turn‐on emission sensor for cyanide ion

Author(s) -

Chakraborty Nilanjan,

Chakraborty Arijit,

Das Suman

Publication year - 2019

Publication title -

journal of heterocyclic chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.321

H-Index - 59

eISSN - 1943-5193

pISSN - 0022-152X

DOI - 10.1002/jhet.3693

Subject(s) - salicylaldehyde , chemistry , chromogenic , titration , schiff base , cyanide , stoichiometry , conductometry , inorganic chemistry , ion , absorption (acoustics) , turn (biochemistry) , detection limit , photochemistry , polymer chemistry , organic chemistry , chromatography , biochemistry , physics , acoustics

A 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 CH 3 COO − 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.

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