Two coumarin formhydrazide compounds as chemosensors for copper ions

Coumarin-Based Small-Molecule Fluorescent Chemosensors

“…The authors suggest the formation of a 1:1:1 complex of 94 :Cu 2+ :ACN after the addition of Cu 2+ to ACN solution of 94, as depicted in Figure . Compounds 95 – 99 − all sense Cu 2+ by the formation of a fluorescently quenched 1:1 complex (Figure ).…”

A naphthoquinone based colorimetric probe for real-time naked eye detection of biologically important anions including cyanide ions in tap water: experimental and theoretical studies

“…FT-IR spectra were obtained on a PerkinElmer Spectrum 100 FTIR spectrometer. 1 H NMR spectra were recorded on a Varian Mercury VX-300 MHz spectrometer in d 6 -DMSO, steady state excitation and emission spectra were obtained on the Molecular Device spectraMax M2. Elemental analyses (C, H and N) were carried out on a Perki-nElmer 240C analytical instrument.…”

“…The development of sensors and receptors for anion detection has been receiving great attention in recent years, [1][2][3][4][5] because of their extensive roles in the biological, chemical and environmental elds. [6][7][8][9][10][11][12] This technique falls among other optical methods that are proving to be convenient for ion monitoring and detection.…”

Coumarin‐Based Reversible Fluorescent Chemosensors for the Sequential Detection of Copper and Citrate Ions

“…Coumarin and its derivatives offer strong and stable emission, high quantum yield, impressive biocompatibility, good structural flexibility as well as versatile chemical functionalization [32,33] . Due to such features, coumarin and its derivatives have been extensively utilized for the detection and monitoring of assorted analytes including copper ion (Table S1) [11,34–38] . In fact, our research group has recently developed a coumarin‐benzothiazole‐based fluorescent probe for the multi‐channel reversible “turn‐on” detection of Mg 2+ and Zn 2+ ions with large Stokes shifts [39] .…”