Table 1.
IONP size (hydrodynamic diameter), polydispersity index (PDI) and zeta potential (mV) as determined using a Malvern zetasizer instrument. Samples were diluted to 1 mg Fe/ml in Millipore-filtered H2O with 10mM NaCl. Data for 20nm non-targeted IONP is presented as a reference. Targeted 20nm IONP were functionalized using a comparable process to 50nm IONP.
| Particle Type | Hydrodynamic diameter (nm) | PDI | Zeta Potential (mV) |
|---|---|---|---|
| MSPIO Dextran 50nm | 88.5 | 0.184 | -0.978 |
| TNP Dextran 50nm | 95.48 | 0.177 | -1.032 |
| Plain Dextran 50nm | 77.88 | 0.19 | -0.59267 |
| PEG200 Dextran 50nm | 102.96 | 0.247 | -0.62003 |
| Plain Dextran 20nm | 25.14 | 0.197 | -0.19143 |