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. 2020 Oct 8;35:101001. doi: 10.1016/j.nantod.2020.101001

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Scheme 2 — The proposed hydrothermal route for heteroatom co-doped CQDs-2 from citric acid, ethylenediamine, and borax as precursors. CQDs-2 functionalized with triazole moiety via click chemistry giving rise to TFH-CQDs-4. Plausible pathway for the formation of CQDs-6 from CQDs-2 with a variable R1 group (as shown in the inset).