Table 2 Physicochemical properties of gold nanoparticles suspended at 1 nM in culture medium
Nanoparticle | ζ- Potential (mV) | pH at 37°C | Absorbance peak | Average particle size in nm | ||||
|---|---|---|---|---|---|---|---|---|
| Â | Â | Â | Â | determined by TEM (Std Dev) | ||||
|  | RPMI | Ham’s-F12 | RPMI (pH 7.66) | Ham’s-F12 (pH 7.96) | RPMI | Ham-F12 | RPMI | Ham-F12 |
14 nm AuNP | −10.24 | −11.40 | 7.61 | 7.84 | 557 nm | 535 nm | 17 nm (± 3 nm) | 16 nm (± 3 nm) |
20 nm AuNP | −12.06 | −11.30 | 7.61 | 7.87 | 557 nm | 532 nm | 22 nm (± 4 nm) | 24 nm (± 3 nm) |