fig17
Figure 17. (A) Synthetic route towards AH-COF; (B) 1H CP/MAS NMR spectra analysis; (C) Fluorescence titration experiments show the response of AH-COF dispersed in acetonitrile upon gradual addition of Hg2+; (D) Competition experiments were conducted to assess selectivity. In (B), the green bars represent the fluorescence response of AH-COF upon the addition of competing ions (2.0 equivalents), while the purple bars indicate the fluorescence response upon subsequent treatment with Hg2+ in the aforementioned systems[108]. Copyright 2020, Elsevier B.V. COF: Covalent organic framework; NMR: nuclear magnetic resonance.
