Novel optical selective chromone Schiff base chemosensor for Al3+ ion

Aggregation-Induced Emission-Active Hydrazide-Based Probe: Selective Sensing of Al3+, HF2–, and Nitro Explosives

“…In recent times, the design of sensors (ions or small molecules) and their application in live cells for the detection of ions/molecules have received active interest from chemistry, physics, chemical engineering, electrical and electronic engineering, and many other branches. On considering the social and biological importance of Al­(III), some examples of fluorescent sensors have been reported for Al 3+ detection with the Schiff base scaffold of 4-aminoantipyrine derivatives, rhodamine B ligands, coumarinyl derivatives, benzophenone, chromone, diphenyl pyrrol derivatives, pyrazoles, quinolones, fluorenes, benzimidazoles, and so forth. Besides, a limited number of sensors exhibit aggregation-induced emission (AIE), and their emissivity, in some cases, has been influenced by Al 3+ ions .…”

Fluorescent Schiff base sensors as a versatile tool for metal ion detection: strategies, mechanistic insights, and applications

“…Al 3+ , Ca 2+ , Ba 2+ , Mg 2+ , Fe 3+ , Cr 3+ , Co 2+ , Cu 2+ , Ni 2+ , Pb 2+ , Hg 2+ , Cd 2+ and Zn 2+ , sensor 19 showed a drastic increase in fluorescence intensity at 488 nm with Al 3+ and to a lesser extent with Fe 3+ 2). 89 In ethanol solution, sensor 20 (l ex = 410 nm) was non-fluorescent. On addition of various metal ions to the solution of sensor 20, only Al 3+ caused significant (B500-fold) fluorescence enhancement at 480 nm.…”

“…13 and Table 2). 89 In ethanol solution, sensor 20 (l ex = 410 nm) was non-fluorescent. On addition of various metal ions to the solution of sensor 20, only Al 3+ caused significant (B500-fold) fluorescence enhancement at 480 nm.…”

Advances in chromone-based copper(ii) Schiff base complexes: synthesis, characterization, and versatile applications in pharmacology and biomimetic catalysis

“…One such pharmacophore is Schiff bases with varied applications across various domains, including pharmaceutical chemistry, 23 catalysis, 24 dye industry, 25 corrosion inhibitors 26,27 and chemo-sensors. 28,29 The conventional method for creating Schiff bases, which bears the name of Hugo Schiff, encompasses the combination of a carbonyl compound with an appropriate amine, employing suitable solvents and catalysts. 30 Schiff bases, a subclass of imines, feature a carbon-nitrogen double bond bound exclusively to alkyl or aryl groups, without any attached hydrogen atoms.…”