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. Author manuscript; available in PMC: 2018 Oct 10.
Published in final edited form as: J Control Release. 2017 Mar 27;263:18–28. doi: 10.1016/j.jconrel.2017.03.384

Fig. 7.

Fig. 7

A. Chemical structure of the polymer 2-((3-aminopropyl)amino)ethanol end-modified poly(1,5-pentanediol diacrylate-co-3-amino-1-propanol) (536). B. TEM image and C. Physical characterization (size and zeta-potential) of 536-based NPs carrying eGFP plasmid DNA at the 25 w/w ratio. Imaging, sizing and zeta-potential measurement were carried out with NPs prepared following the same methods described for transfection experiments and immediately after NP complexation. A 1:1 v/v dilution of NP mix to PBS 1x was performed for sizing and zeta-potential measurements.