A simple colorimetric chemosensor bearing a carboxylic acid group with high selectivity for CN−

Bicinchoninic acid-based colorimetric chemosensor for detection of low concentrations of cyanide

“…With this method, colorimetric and fluorometric detections of cyanide with detection limits of 3.9-10 -8 and 3.1-10 -9 M, respectively, were successfully demonstrated. Sodium (E)-2-((2-(3-hydroxy-2-naphthoyl)hydrazono) methyl)benzoate was shown to detect cyanide in a mixture of DMF/H 2 O (9:1), based on the fast color change from colorless to yellow it resulted in upon contact with CN -ions [48]. In another report, (E)-9-(((2-hydroxy-5-nitrophenyl)imino)methyl)-2,3,6,7-tetrahydro-1H,5H pyrido[3,2,1ij]quinolin-8-ol was demonstrated to serve as a selective chemosensor for detection of cyanide in aqueous medium [49].…”

A Novel 4-(1H-Benzimidazol-2-yl)-2-methoxy-phenol Derived Fluorescent Sensor for Determination of CN– Ion

“…Fluorescence sensation is an exceptional technique among the different detection methods used for recognition of different anion, such as cyanide anion, because of its high sensitivity [7]. Consequently, cyanide selective detection and quantification are very important, which has been the object of increasing investigation [8].…”

A highly selective colorimetric chemosensor for cyanide and sulfide in aqueous solution: experimental and theoretical studies

“…[24][25][26][27] Therefore, the colorimetric approach has been popular recently due to its capability to detect interesting analytes with fast response, convenient procedures, and high sensitivity. [28][29][30][31][32][33] Compared with the many known colorimetric organic molecule sensors for anions, [34][35][36][37][38][39][40][41][42][43][44][45][46][47] there is only one colorimetric chemosensor capable of simultaneously detecting CN À and S 2À in aqueous solutions. 39 Therefore, there is a great need for the development of new colorimetric chemosensors that can simultaneously detect both CN À and S 2À in aqueous solutions.…”