Figure 2

Relative size distributions of separated MNP groups and correlation between DLS and TEM results. Relative size distributions of separated MNP groups in aqueous solution measured by DLS (a) and a graph showing correlation between DLS and TEM results (b). The mean DLS diameters for the four groups, A to D, were 65.5 ± 14.0, 38.9 ± 9.1, 23.1 ± 6.0, and 18.5 ± 4.4 nm, respectively, with relative volumes of 29% (A), 49% (B), 12% (C), and 10% (D) as measured by integration of the DLS spectra.