Skip to main content
. 2022 Sep 8;9(32):2204067. doi: 10.1002/advs.202204067

Figure 1.

Figure 1

Preparation and characterization of PRNs. TEM images of TME‐responsive PRNs (A) and non‐responsive NRNs (B) at pH 6.7 and pH 7.4, respectively. C) Size transition of PRNs at the acid and neutral pH measured by DLS. D) Images of PRNs diffusion in agarose gel at pH 6.7. E) The zeta potential of PRNs and NRNs at pH 6.7 and 7.4. F) UV–Vis–NIR spectra of PRNs and CuS5. G) Photothermal conversion properties of PRNs and NRNs under 1064 nm laser irradiation with varying power densities. H) Calcein‐AM/PI staining by 4T1 cells after pre‐incubated with different formulations with or without laser irradiation (1064 nm, 1 W cm−2, 5 min) at pH 6.7 (Scale bar, 100 µm).