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. Author manuscript; available in PMC: 2010 Jun 10.
Published in final edited form as: J Am Chem Soc. 2009 Jun 10;131(22):7567–7569. doi: 10.1021/ja902039y

Figure 4.

Figure 4

(A) ζ potentials of cationic mesoporous silica core protocells (black dots), free liposome in the supernatant (red and blue squares) after successive lipid exchange/fusion steps, and pure DOTAP and DOPS liposomes (in 10 mM MOPS, pH 7.0, 60 mM NaCl). (B) ζ potential of protocells made by adding different concentrations of DOTAP liposomes to cationic silica nanoparticle-supported DOPS bilayers.