Table 1.
Basic physicochemical properties of surface-modified magnetite nanoparticles.
| Quantity | BSA-SO-MNPs | PEG-SO-MNPs |
| magnetite inner core diameter [nm] | 10.09 ± 0.11 | 9.92 ± 0.16 |
| particle size (DH) diameter in H2O [nm] | 70.0 ± 3.49 | 76.0 ± 2.52 |
| Is at 295 K [Am2kg−1] | 2.07 ± 0.01 | 2.17 ± 0.01 |
| Msat [mT] | 2.74 ± 0.01 | 2.87 ± 0.04 |
| zeta potential (ζ) [mV] | −48 ± 0.3 | −44 ± 0.5 |
| surface modification, Mw [g/mol]: | ||
| C18H33NaO2 | 304.44 | 304.44 |
| bovine serum albumin (BSA) | 66,000 | — |
| polyethylene glycol (PEG) | — | 1,000 |
| ratio (BSA, PEG)/Fe3O4 | 2 | 0.25 |
| PDI | 0.16 ± 0.01 | 0.12 ± 0.01 |
| particle size distribution and mean diameter in culture medium [nm] | 98.0 ± 8.0 unimodal | 281 ± 4.0 unimodal |
| PDI | 0.14 ± 0.01 | 0.17 ± 0.01 |
| zeta potential (ζ) in culture medium [mV] | −16.3 ± 0.9 | −14.1 ± 0.9 |