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. 2021 Jan 8;16:201–211. doi: 10.2147/IJN.S271461

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© 2021 Deng et al.

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Size and PEG length-controlled PEGylated monocrystalline SPIO (SPIO@PEG) Nanocomposite. (A) TEM, HRTEM and DLS distribution of three SPIO nanocrystals (in hexane). (B) Chemical characterization of polyethylene glycol dopamine-modification. ¹H NMR spectra (CDCl₃) and characteristic peak assignment of activated intermediate (PEG-CI) and end product (PEG-DA). (C) DLS diameter distribution of the nine PEGylated SPIO nanoparticles in water.