Table 2 Size of QDs as measured by TEM and DLS, and their zeta potential.
Sample | Core diameter (nm) | Hydrodynamic diameter (DLS by number) (nm) | Polydispersity index (PDI) | Zeta potential (mV) | Standard deviation of Zeta potential |
|---|---|---|---|---|---|
QD (A) | 4.2 (+/- 0.7) | 8.2 | 0.570 | -19 | 1.7 |
QD (B) | 4.8 (+/- 0.8) | 27.7 | 0.312 | -52 | 2.7 |
QD (C) | 4.9 (+/- 0.9) | 4.7 | 0.195 | -20 | 4.1 |