Figure 2 (a) Schematic illustration for the preparation of drug-loaded nano-assemblies. Reproduced from Ref. [30] with permission of Wiley . (b) Schematic diagram of the proposed mechanism for converting immunologically cold into hot tumors by ChA CQDs. Reproduced from Ref. [31] with permission of American Chemical Society . (c) The dual catalytic mechanism of DA-CQD@Pd SAN. Reproduced from Ref. [32] with permission of Elsevier . (d) Schematic illustration of the BSA composite Pt-CDs. Reproduced from Ref. [33] with permission of Wiley .