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(a) A schematic diagram explaining the preparation and photothermal application of pd-PEI-Ce6 (b) TEM image of Pd-PEI-Ce6 (c) Photograph of solutions containing Pd nanosheets (1), Ce6-PEI (2), and Pd-PEI-Ce6 (3) in PBS at pH 7.4. (d) An increase in temperature was observed on the tumor sites of mice treated with PBS, Ce6, Pd, and Pd-PEI-Ce6 after irradiation by 660 nm laser (0.5 W/cm2). Adapted with permission from [106].
