A highly sensitive and selective fluorescent turn-on chemosensor bearing a 7-diethylaminocoumarin moiety for the detection of cyanide in organic and aqueous solutions

Abstract

New Schiff bases bearing salicylidene moiety with different substituents and 7-Diethylaminocoumarin-thiazole were synthesized and characterized by spectroscopic methods. Also, four of the synthesized compounds (4, 6, 7, and 9) were...

A triphenylamine scaffold for fluorogenic sensing of noxious cyanide via the ICT mechanism and its bioimaging application

“…24 Generally, the strategy behind the design of cyanide sensors is based upon hydrogen bonding, deprotonation, nanotechnology, supramolecular self-assembly, metal cyanide displacement and nucleophilic addition techniques. [25][26][27][28][29][30][31] However, the first few approaches lacked selectivity due to interference by protic solvents and competing ions, whereas the ion displacement technique requires a stabilized metalligand complex. On the contrary, a chemosensor based on a nucleophilic addition reaction, known as a chemodosimeter, possesses benefits such as high selectivity and sensitivity, and a rapid response time.…”

A benzothiazole-based new fluorogenic chemosensor for the detection of CN− and its real-time application in environmental water samples and living cells

“…[24][25][26][27][28][29][30][31][32][33][34][35][36][37] The reported cyanide uorescence sensors involved the following mechanistic concepts: coordination, hydrogen bonding interaction, anion-metal affinity, nucleophilic addition reactions, and based on nanotechnology. 32,[38][39][40][41][42][43][44][45][46][47][48][49][50][51][52] Hydrogen bonding, anion metal affinity, and coordination sensors all have signicant drawbacks, including a lack of selectivity and interference from competing analytes such as uoride, phosphate, and acetate ions. However, among the numerous chemosensors described, reaction-based sensors (chemodosimeters) offer the benets of high specicity, outstanding sensitivity, and rapid response time.…”

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

“…15 Alternatively, nucleophilic reaction-based CN − probes exhibit better specific selectivity and higher sensitivity. 16 Therefore, the development of a reaction-based fluorescence probe 17 is probably the appropriate approach for the selective and rapid detection of CN − in liqueurs.…”