| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1228942 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2016 | 7 Pages |
•The receptor PY was synthesized by a simple method with high yield.•The detection limit of Zn2 + by PY was very low (1.02 μM).•The reversible behavior of the receptor PY towards Zn2 + was studied with EDTA.•The turn-on response with remarkable red shift in the fluorescence spectra was further supported by quantum (DFT) calculations.
The fluoroionophore PY serves as a selective and fluorimetric chemosensor for Zn2 + based on charge transfer (CT). A mechanism for the binding mode was proposed based on fluorescence changes, NMR experiments and theoretical calculations. The 1:1 stoichiometry between Zn2 + and the sensor was deduced from Job's plot. The addition of EDTA quenches the fluorescence of PY.Zn2 + complex offers PY as a reversible chemosensor.
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