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. Author manuscript; available in PMC: 2010 Apr 19.
Published in final edited form as: Biomaterials. 2008 Jul 7;29(28):3836–3846. doi: 10.1016/j.biomaterials.2008.06.002

Table 1.

Reaction conditions for the preparation of silica NPs of various sizes

Desired size (nm) TEOS (g) Ammonium hydroxide (g) Deionized water (g) Average NP size (nm) as measured via laser light scattering Average polydispersity index (PDI)
50 4.167 2.5 1.2 52.0 ± 2.96 0.06 ± 0.03
100 4.167 3.26 1.94 107.3 ± 6.3 0.02 ± 0.02
300 4.167 7.1 5.5 299.3 ± 7.7 0.06 ± 0.20

The corresponding sizes were measured via light scattering and values are the mean ± standard deviation.