3 years ago

A coumarin based azo-phenol ligand as efficient fluorescent “OFF-ON-OFF” chemosensor for sequential detection of Mg2+ and F−: Application in live cell imaging and as molecular logic gate

A coumarin based azo-phenol ligand as efficient fluorescent “OFF-ON-OFF” chemosensor for sequential detection of Mg2+ and F−: Application in live cell imaging and as molecular logic gate
A novel coumarin based azo-phenol ligand (H2L) has been synthesized and characterized by several spectroscopic techniques. An almost 16 fold enhancement of emission intensity has been observed upon gradual addition of Mg2+ to H2L in DMSO:H2O (1:5v/v) medium while it has no significant effect in emission intensity even in presence of other metal ions. The emission intensity of L-Mg2+ complex has almost quenched on gradual addition of F to it. The limit of detection for both Mg2+ and F are of 10−8 M order, hence the newly developed chemosensor is highly efficient in detecting Mg2+ and F in very minute levels. The chemosensor can even detect Mg2+ in the intracellular region of human lung cancer cells (A549 cells).

Publisher URL: www.sciencedirect.com/science

DOI: S092540051731167X

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