A simple and highly selective 1,2,4,5-tetrazine-based colorimetric probe for HSO₃ ^- ion recognition in food.

ABSTRACT: A series of 3,6-bis-substituted-1,2,4,5-tetrazine-based colorimetric probes has been developed in good yields that exhibits highly selective and sensitive colorimetric recognition of HSO₃ ^- in aqueous solution. The color of the solution containing colorimetric probes changed markedly from orange to colorless, upon the addition of HSO₃ ^-. Quantification of the absorption titration analysis shows that the detection limit of 3,6-bis(2-aminoethylamino)-1,2,4,5-tetrazine (2a) for HSO₃ ^- was 3.8 μM. It was noted that 3,6-bis-substituted-1,2,4,5-tetrazine-based colorimetric probes have a specific response toward HSO₃ ^- without interference from other 17 different anions and 16 common cations. A plausible mecha

SUBMITTER: Lu J 

PROVIDER: S-EPMC9086460 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature