Figure 7 . (A) Anti-counterfeiting and information protection applications of the ultralong lifetime room temperature phosphorescence CDs. Reproduced with permission.[111] Copyright 2018, Wiley-VCH. (B) Preparation process of CDs/starch powder and its application in latent fingerprints detection. Reproduced with permission.[114] Copyright 2020, American Chemical Society. (C) Demonstration of down-converting light-emitting diodes using F-GQDs. Reproduced with permission.[95]Copyright 2021, Wiley-VCH. (D) Applications of carbon nanoring phosphors in W-LEDs. Reproduced with permission.[96]Copyright 2015, Wiley-VCH. (E) Schematic of CDs used for bioimaging. Reproduced with permission.[115] Copyright 2009, American Chemical Society. (F) CDs exhibiting multicolor fluorescence via adjusting their concentrations for biosensing and bioimaging. Reproduced with permission.[116] Copyright 2018, Elsevier. (G) The synergistic shape/color change and directional swimming locomotion of the CDs polymer gel-based artificial octopus-like soft robot. Reproduced with permission.[117]Copyright 2021, Wiley-VCH.