| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1231040 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2016 | 8 Pages |
•A highly Zn(II)-selective chemosensor 1 was designed and synthesized.•Complex 1-Zn can be utilized for the detection of H2PO4− and HP2O73 − ions.•The fluorescence of 1 is based on the inhibition of ESIPT and CHEF by Zn2 + binding.
A new, highly selective turn-on fluorescent chemosensor based on 2-(2′-tosylamidophenyl)thiazole (1) for the detection of zinc and phosphate ions in ethanol was synthesized and characterized. Sensor 1 showed a high selectivity for zinc compared to other cations and sequentially detected hydrogen pyrophosphate and hydrogen phosphate. The fluorescence mechanism can be explained by two different mechanisms: (i) the inhibition of excited-state intramolecular proton transfer (ESIPT) and (ii) chelation-induced enhanced fluorescence by binding with Zn2 +. The sequential detection of phosphate anions was achieved by the quenching and subsequent revival of ESIPT.
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