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. Author manuscript; available in PMC: 2014 Jan 24.
Published in final edited form as: ACS Nano. 2009 Oct 27;3(10):3273–3286. doi: 10.1021/nn900918w

Table 1.

Size distribution of MSNPs in aqueous solutions.

Size (nm)
 Zeta Potential (mV)
H2O DMEM
10% serum
BEGM BEGM
2mg/ml BSA
H2O/DMEM+serum/BEGM+BSA
MSNP-OH 1966 408 1096 416 −10.5/−6.8/−7.2
MSNP-Phosphate 1975 306 867 439 −8.9/−6.5/−5.8
MSNP-PEG 2675 405 1215 542 −10.4/−5.9/−4.5
MSNP-PEI 0.6 KD 1689 415 1243 474 +29.5/−7.8/−6.5
MSNP-PEI 1.2 KD 1684 452 1298 502 +38.7/−6.5/−7.1
MSNP-PEI 1.8 KD 1053 510 1087 550 +36.9/−5.4/−3.2
MSNP-PEI 10 KD 614 702 917 684 +34.1/−7.5/−6.9
MSNP-PEI 25 KD 1473 1043 1544 825 +30.8/−5.9/−4.0

Particle size and zeta potential in solution were measured by a ZetaSizer Nano (Malvern). DMEM = Complete Dulbecco’s Modified Eagle Media, which contains 10% fetal calf serum (FCS). BEGM = Bronchial Epithelial Growth Medium, which includes growth factors, cytokines, and supplements (no serum).

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