A novel colorimetric and “turn-on” fluorimetric chemosensor for selective recognition of CN − ions based on asymmetric azine derivatives in aqueous media

A novel bifunctional chemosensor for bioimaging in living cells with highly sensitive colorimetric and fluorescence detection of CN− and Al3+

“…57 The relatively low detection limit of 1o compared to recently reported cyanide sensors Scheme 2 Synthetic route of diarylethene 1o. (Table S1, ESI †) [58][59][60][61][62] indicates its potential use as a chemosensor for cyanide monitoring. We sought to further investigate the binding mechanism of 1o and CN À using 1 H NMR (CD 3 CN-d 3 , 400 MHz) titration experiments (Fig.…”

Chemosensors based on N-heterocyclic dyes: advances in sensing highly toxic ions such as CN− and Hg2+

“…Finally, both probes (45 and 46) could be used in paper strips for the in situ detection of CN À in aqueous samples. 76 2.4.3. Other fused pyridines.…”

“…Another example following strategy III is that reported by Hu and co-workers 76 in which the hydrazone of salicylaldehyde and quinoline 46 was synthesized. This probe showed a colorimetric response from colorless to yellow and a fluorescent response in the presence of cyanide ( Fig.…”

Synthesis of Symmetrical Acetophenone Azine Derivatives as Colorimetric and Fluorescent Cyanide Chemosensors

“…Detections involve the formation of hydrogen bonding or deprotonation between cyanide and chemosensors. For example, Azine derivatives bearing hydroxyl group have been used as colorimetric and fluorescent chemosensors [1,5,[11][12][13]. Most azine chemosensors were produced from aryl benzaldehydes and hydrazine hydrates as starting materials under reflux condition [14][15][16].…”