Fig. 1
From: Light-triggered multifunctional nanoplatform for efficient cancer photo-immunotherapy
Characterization of MPSNs. A and B TEM images of MPSNs. C Elemental mapping of C, N, O, Zn, and Si of MPSNs. D Zeta potential. E UV/Vis spectra of MPSNs, MPSNs@R837, ZnP and free R837. F The fluorescence spectra of MPSNs, MPSNs@R837, and ZnP upon irradiation of 450Â nm light, G upon irradiation of 780Â nm light. H The fluorescence lifetime of ZnP and MPSNs in water. I R837 release from MPSNs@R837 at different pH values (pH 7.4 or 5.0)