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(A) Schematic illustration of synthesis process of the PEG-b-PCL-TK-PAMAM-ICG via self-assembly of PEG-b-PCL and PAMAM-ICG linked with a singlet oxygen–responsive TK bond and singlet oxygen–mediated release of the small PAMAM-ICG from the SNPICG/Ce6 NPs. (B) The mechanism of PDT/PTT combination site-specific phototherapy. Reproduced with permission [66], Copyright 2020, American Chemical Society.
