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a) TEM picture of TBTPNPs. b) Size distribution of TBTPNPs. c) DLS of TBTPNPs in water, PBS, and DMEM for 60 d. d) Photograph of TBTPNPs dissolved in water (left), PBS (middle), and DMEM (right). e) ζ‐potential of TBTPNPs in water, PBS, and DMEM. f) Normalized absorption and fluorescence spectra of TBTPNPs.
