Fig. 1
Characterizations of MG@P NPs. a Schematic diagram for the fabrication of MG@P NPs. b Photographs of H2O@P NPs, G@P NPs, M@P NPs and MG@P NPs dispersed in PBS. c SEM and d TEM of MG@P NPs. e CLSM image of DiI-stained MG@P NPs (red fluorescence). f Size distribution of MG@P NPs and the change of average size with prolonged time duration. g Zeta potential of MG@P NPs. h UV − vis absorbance spectra of free PMnC, free GOx, and MG@P NPs. f UV–vis spectra of PMnC in different concentrations and j linear relationship between concentration of MG@P NPs and absorbance. k Time-dependent SOSG absorption spectra of MG@P NPs (10 µg/mL) under US irradiation