Table 1 Physicochemical properties of uncoated and lipid-coated SPIONs in different buffer solutions at pH 7.4
From: Stability and magnetically induced heating behavior of lipid-coated Fe3O4 nanoparticles
Buffer system | Particle concentration (mg/mL) | Particle size (nm) | Zeta potential (mV) | ||
|---|---|---|---|---|---|
Uncoated SPIONs | Lipid-coated SPIONs | Uncoated SPIONs | Lipid-coated SPIONs | ||
1.0 | 520.0 ± 45.4 | 651.6 ± 25.3 | -32.4 ± 1.0 | -11.9 ± 1.4 | |
Citrate, pH 7.4 | 0.24 | 286.6 ± 25.4 | 460.3 ± 15.4 | -40.7 ± 1.4 | -15.6 ± 1.4 |
0.02 | 80.0 ± 1.7* | 179.3 ± 35.0** | -47.1 ± 2.6* | -19.1 ± 1.3** | |
1.0 | 1860.0 ± 180.9a | 2422.0 ± 223.5a | -11.2 ± 1.0 | -4.5 ± 0.9 | |
HBSS, pH 7.4 | 0.24 | 1255.0 ± 35.2a | 1560.0 ± 135.2a | -12.3 ± 1.1 | -5.5 ± 1.0 |
0.02 | 580.0 ± 8.5 | 193.5 ± 32.6** | -23.3 ± 0.8 | -7.4 ± 1.4 | |
1.0 | 2800.0 ± 320.4a | 2990.0 ± 412.5a | -10.3 ± 0.5 | -2.2 ± 0.6 | |
PBS, pH 7.4 | 0.24 | 2214.0 ± 45.3a | 2500.0 ± 245.3a | -10.8 ± 1.0 | -3.4 ± 1.1 |
0.02 | 931.0 ± 4.5 | 229.9 ± 12.42** | -22.5 ± 0.8 | -5.2 ± 1.6 | |