Table 2. Dynamic Light Scattering analysis of the formation of aggregates by representative compounds in solution.
| Compound | Concentration (mg/ml) | HydrodynamicRadius (nm) | PdI | Zeta potential |
|---|---|---|---|---|
| SM.2–16 | 1 | 2.283 | 0.695 | −48.0 |
| 0.5 | 2.265 | 0.533 | ||
| 0.25 | 2.511 | 0.663 | ||
| 0.125 | 2.149 | 0.452 | ||
| 0.0625 | 2.364 | 0.742 | ||
| 0.03125 | 2.140 | 0.495 | ||
| SM.2–20 | 1 | 2.878 | 0.595 | −50.2 |
| 0.5 | 2.571 | 0.518 | ||
| 0.25 | 2.480 | 0.789 | ||
| 0.125 | 2.172 | 0.635 | ||
| 0.0625 | 2.159 | 0.658 | ||
| 0.03125 | 2.186 | 0.523 | ||
| SM.2–23 | 1 | 2.877 | 0.545 | −52.2 |
| 0.5 | 2.597 | 0.539 | ||
| 0.25 | 2.951 | 0.59 | ||
| 0.125 | 2.765 | 0.557 | ||
| 0.0625 | 2.370 | 0.677 | ||
| 0.03125 | n.d. | n.d. |
Nanoparticle size and polydispersion index (by Photocorrelation Spectroscopy) and surface charge (Zeta potential) were measured as an index of aggregation of the three compounds in solution, tested at the indicated concentration.