Table 3.
Characterization of nanoparticles.
| Particle | Peak Diameter (nm) | Z-Average Diameter (nm) | PdI (−) | Zeta Potential (mV) |
|---|---|---|---|---|
| Silica | ||||
| 30 nm | 32.0 ± 1.1 | 29.5 ± 0.5 | 0.162 ± 0.013 | −15.6 ± 1.2 |
| 100 nm | 137.0 ± 1.5 | 129.7 ± 1.4 | 0.042 ± 0.005 | −19.7 ± 1.05 |
| 400 nm | 481.4 ± 22.1 | 460.3 ± 10.1 | 0.164 ± 0.030 | −21.8 ± 2.4 |
| MP/1500 nm | 367.4 ± 157.1 | 0.869 ± 0.080 | −29.3 ± 2.1 | |
| Qdots | ||||
| Carboxyl | 49.85 ± 7.8 | 0.49 ± 0.028 | −32.0 ± 1.3 | |
| PEGylated | 32.9 ± 9.07 | 0.31 ± 0.028 | −3.6 ± 2.1 | |
| Amino | 47.9 ± 3.0 | 0.44 ± 0.005 | −7.3 ± 3.8 |
We measured silica NPs and Qdots in PBS-based assay buffer (1.0 mg/mL or 40 nM, respectively) with dynamic light scattering. All data are the average ± SD of three independent measurements.