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. Author manuscript; available in PMC: 2021 May 11.
Published in final edited form as: ACS Biomater Sci Eng. 2020 Apr 17;6(5):2943–2955. doi: 10.1021/acsbiomaterials.0c00116

Figure 4. PBAE and PEG-PBAE NP characterization.

Figure 4.

(a) Hydrodynamic diameter, polydispersity index (PDI), and (b) 24-h size stability of 447 60 w/w, 447 + 44-PEG0.8k 1:1 30 w/w, and 447 + 44-PEG2k 1:2 60 w/w formulations in artificial cerebrospinal fluid measured by dynamic light scattering (n = 3, mean ± s.d., *: p < 0.05 compared to 447 60 w/w NP). (c) Representative transmission electron microscopy images (scale bar = 100 nm) and (d) zeta potential of 447 60 w/w and 447 + 44-PEG0.8k 1:1 30 w/w formulations (n = 3, mean ± s.d., *: p < 0.05 compared to 447 60 w/w NP).