| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1228716 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2016 | 5 Pages |
•An easy-to-prepare fluoride sensor was synthesized.•Anion recognition phenomenon can be observed by naked-eye.•Recognition mechanism was proved by the 1H NMR titration experiments and DFT calculations.
A derivative of squaramide (cyclobuta[b]quinoxaline-1, 2(3H, 8H)-dione) has been synthesized for the ratiometric and colorimetric sensing of F− in aqueous solution in competitive fashion. With F−, probe 1 showed a highly selective naked-eye detectable color change along with a characteristic UV–Vis absorbance over other tested ions, which probably originates from the deprotonation occurred between 1 and F−, as proved by the 1H NMR titration experiments and DFT calculations.
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