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. 2018 Oct 1;13:5865–5886. doi: 10.2147/IJN.S162647

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© 2018 Assali et al. This work is published and licensed by Dove Medical Press Limited

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AFM images of two-dimensional and three-dimensional surface plot view of GO (A₁), GO-PEG (A₂), GO-PEG-(P-l-Arg) (A₃). Size histogram of GO (B₁), GO-PEG (B₂), GO-PEG-(P-l-Arg) (B₃) were measured by DLS and digital photographs of aqueous suspension of GO and modified GO.

Abbreviations: AFM, atomic force microscopy; DLS, dynamic light scattering; GO, graphene oxide; PEG, polyethylene glycol; P-l-Arg, poly-l-arginine; Diam, diameter.