Figure 6 . (A) Schematic illustration of quenching-resistant photoluminescence of surface-functionalized GQDs. Reproduced with permission.[95] Copyright 2021, Wiley-VCH. (B) Quantum yield and PL intensity at different concentrations of CDs. Reproduced with permission.[99] Copyright 2017, American Chemical Society. (C) Schematic of the synthesis of CDs and the CDs aggregation induced emission enhancement effect caused by tetrahydrofuran. Reproduced with permission.[101]Copyright 2015, Royal Society of Chemistry. (D) Formation of CDs monomers and their aggregates. Reproduced with permission.[102] Copyright 2019, Springer. (E) Fluorescence and phosphorescence processes of CDs powder at ambient conditions. Reproduced with permission.[105]Copyright 2019, Wiley-VCH. (F) Schematic diagram of cross-link-enhanced emission effect leading to the generation of room temperature phosphorescence. Reproduced with permission.[106]Copyright 2019, Wiley-VCH. (G) Proposed room temperature phosphorescence mechanism of CDs with different degrees of crosslinking. Reproduced with permission.[107] Copyright 2022, Wiley-VCH.