《A highly sensitive “”ON-OFF”” optical sensor for the selective detection of cyanide ions in 100% aqueous solutions based on hydrogen bonding and water assisted aggregation induced emission》 was written by Nazarian, Ramo; Darabi, Hossein Reza; Aghapoor, Kioumars; Firouzi, Rohoullah; Sayahi, Hani. Reference of 2,6-Diaminopyridine And the article was included in Chemical Communications (Cambridge, United Kingdom) in 2020. The article conveys some information:
Nanoparticles N,N’-(pyridine-2,6-diyl)bis(2-(2,4-dichlorophenoxy)acetamide) exhibited an “”on-off”” emission response toward cyanide (CN-) ions in 100% aqueous solutions based on AIE features. AIEgen 1 is an easy-to-use probe that exhibits rapid response (5 s), extremely high sensitivity (limit of detection = 8.2 nM) and excellent selectivity. The sensing performance of CN- through a test kit and bitter seed solutions was good. The exptl. results show that compound 1 is planar and can self-assemble into a supramol. system and show blue emission. Then, CN- destroys both hydrogen bonds and the aggregates of 1 and quenches the emission. This process is reversible upon the addition of HCl solution In addition to this study using 2,6-Diaminopyridine, there are many other studies that have used 2,6-Diaminopyridine(cas: 141-86-6Reference of 2,6-Diaminopyridine) was used in this study.
2,6-Diaminopyridine(cas: 141-86-6) belongs to pyridine. Pyridine and its simple derivatives are stable and relatively unreactive liquids, with strong penetrating odours that are unpleasant.Reference of 2,6-Diaminopyridine