Fig. 4

a Synthetic Strategy for NIR-Responsive m-PB-CO/PEG NPs Applied for CO and Photothermal Therapy and US Imaging. Reproduced with permission from Ref [87]. Copyright 2016, American Chemical Society. b Schematic Illustration of the Mn₂(CO)10-Loaded and POM Surface-Modifified Hollow Mesoporous Organosilica Nanoplatform, HMOPM-CO, for Tumor Microenvironment (TME)-Responsive Self-Assembly and Precise Synergistic Therapy. Reproduced with permission from Ref [89]. Copyright 2018, American Chemical Society. c Schematic illustration of multifunctional nanoplatform for photoacoustic imaging-guided combined therapy enhanced by CO induced ferroptosis. Reproduced with permission from Ref [90]. Copyright 2019, Elsevier Ltd. d The synthetic workflflow of MCM@PEG-CO-DOX for NIR light-responded CO-DOX combination therapy of tumor with dual-mode imaging. Reproduced with permission from Ref [92]. Copyright 2019, Elsevier Ltd