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. 2024 Apr 24;9(22):23573–23583. doi: 10.1021/acsomega.4c00833

Figure 1.

Figure 1

(A) UV–vis spectra and (B) photoluminescence of (a) CQDs-1 (50 mg GNP + 50 mg glucose), (b) CQDs-2 (50 mg GNP + 50 mg extracted gardenia seed), and (c) CQDs-3 (50 mg GNP + 50 mg gardenia seed) prepared at different temperatures (160, 180, 200, 220, and 240 °C). Photographic images of CQDs synthesized at different temperatures (160, 180, 200, 220, and 240 °C) under daylight conditions and their corresponding fluorescence properties when excited with UV light at a wavelength of 365 nm (photography courtesy of Xuan-Wei Fang. Copyright 2024).