(A) Schematic illustration of the preparation of Au NCs-based nanoprobes and their photodynamic therapy (PDT) applications in vitro and in vivo. Reprinted with permission from Ref. 151. Copyright © 2015, John Wiley & Sons, Inc. (B) Illustration of the synthesis of Ce6-conjugated silica-coated Au NCs for PDT therapy. Reprinted with permission from Ref. 152. Copyright © 2013, Elsevier. (C) Diagram representing the nucleus-targeting TAT peptide-Au NCs for PDT. Cell viability, R generation, and DNA fragmentation assay were evaluated by using HeLa cells. Reprinted with permission from Ref. 156. Copyright © 2015, John Wiley & Sons, Inc. (D) Schematic illustration of the formation of RGD-conjugated Au NCs-ICG-mPEG-PLGA nanocapsules. Temperature change curves and infrared thermal results of different suspensions over a period of 5 min with exposure on the 808 nm light. Reprinted with permission from Ref. 158. Copyright © 2016, the Royal Society of Chemistry.