Gold Nanorods-Based Theranostics for Simultaneous Fluorescence/Two-Photon Luminescence Imaging and Synergistic Phototherapies

Figure 4

(a) Dark toxicity of A375 cells incubated with various concentrations (0–80 μg Au/mL) of GNRs, GNR@SiO₂, GNR@SiO₂-NH₂, and GNR@SiO₂-ICG, respectively. (b) The untreated cells were used as control group. Scale bars, 20 μm. (c) Two-photon luminescence image of GNRs in A375 cells treated with GNR@SiO₂-ICG (10 μg Au/mL content) for 24 h. Scale bars, 20 μm. Ex: 800 nm. (d) Fluorescence image of ICG in A375 cells incubated with GNR@SiO₂-ICG (10 μg Au/mL content) for 24 h. Scale bars, 20 μm. Ex: 655 nm.

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