Fig. 2

Performances of Cu-DCA NZs. (A) Proportion-dependent temperature change curves of Cu-DCA NZs under NIR irradiation (1.0 W cm^− 2). (B) Infrared thermal imaging data of different proportion of Cu-DCA NZs with NIR irradiation (1.0 W cm^− 2). (C) Temperature change of Cu-DCA NZs with NIR irradiation (0.5, 1.0, and 2.0 W cm^− 2). Inset are different NIR irradiation power solution photographs of Cu-DCA NZs. (D) oxygen generation, (E) RDPP fluorescence intensity and (F) Superoxide anion scavenging ability of Cu-DCA NZs. (G-J) Drugs loading of Cu-DCA NZs. (G) Schematic of drugs loading of Cu-DCA NZs. (H-J) Size distribution after different drugs loading. Inset are the UV–vis absorption spectra and solution photographs of different drugs. Data are presented as the mean ± SD (n = 3). * p < 0.05, ** p < 0.01, *** p < 0.001 and ns > 0.05