A biginelli-azophenol based robust sensor for rapid diagnosis of cyanide in real samples

Macrocyclic bisazo-dipyrrolmethane crown ether: synthesis, crystal structure and anions recognition

“…Selective detection of anions using calixpyrrole, dipyrrolequinoxaline, dipyrromethane, and pyrrolic amide were reported [8][9][10][11][12][13][14][15][16]. Azo N = N group, as a famous signal unit, has been widely used in the design of colorimetric anion sensors [17][18][19][20][21]. The 2azopyrrole, which combines pyrrole with N = N group, could be a good anion sensor.…”

A bisspiropyran fluorescent probe for the selective and rapid detection of cyanide anion in liqueurs

“…Owing the advantages of being simple, rapid, and inexpensive, the chemical probe-based colorimetric or fluorometric methods 10,11 were preferred in CN − detection, particularly in on-site tests. Among these chemical probes, small molecule fluorescent probes were frequently developed and employed in CN − detection 12 based on the strong binding affinity between CN − and H + , 13 metal ions 14 or carbonyl compounds. 15 Alternatively, nucleophilic reaction-based CN − probes exhibit better specific selectivity and higher sensitivity.…”