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These nanocapsules can degrade within the acidic tumor microenvironment when subjected to laser irradiation, releasing free Au\u2013Fe<jats:sub>2<\/jats:sub>C nanoparticles. This enables them to penetrate deep into tumor regions and disrupt intracellular redox balance. Under the guidance of imaging, these PFP@Au\u2013Fe<jats:sub>2<\/jats:sub>C\u2013SRF nanocapsules effectively inhibit tumor growth when exposed to laser irradiation, capitalizing on the synergistic photothermal and ferroptosis effects. 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