Fig. 4
a H2O2-triggered O2 generation in different solutions. b Photograph of H2O2-triggered O2 generation in different solutions. (A: MnO2/ZIF-8/ICG in H2O2 solution; B: FA-EM@MnO2/ZIF-8/ICG in H2O2 solution; C: ZIF-8/ICG in H2O2 solution; D: MnO2/ZIF-8/ICG in PBS solution; E: FA-EM@MnO2/ZIF-8/ICG in PBS solution). c Fluorescence spectra of RDPP in PBS (c); H2O2 (d); FA-EM@MnO2/ZIF-8/ICG (e); and FA-EM@MnO2/ZIF-8/ICG + H2O2 (f). g CLSM images of RDPP in 4T1 cells without any treatments (1); and treated with H2O2 (2); FA-EM@MnO2/ZIF-8/ICG (3); and FA-EM@MnO2/ZIF-8/ICG + H2O2 (4). Scale bars: 300 μm