Fig. 6.
(a) Schematic of the preparation of POS-UCNPs/ICG composite and its APDT mechanism; (b) Schematic of POS-UCNPs/ICG induced bacterial damage; (c) Bacterial colonies after treatment with different concentrations of prepared composite; (d) Schematic of POS-UCNPs/ICG triggered anti-inflammation mechanism via CO production. Reprinted with permission [88], Copyright © 2022 Ivyspring International Publisher.