Characterization of prepared nanoparticles.
| Entry | Samplesa | EEb (%) | Sizec (nm) | ζ potential (mV) | |
|---|---|---|---|---|---|
| DLS | SEM | ||||
| 1 | MSNs | N/Ad | 102.4 ± 54.6 | 107.5 ± 13.9 | −16.9 ± 0.4 |
| 2 | SA46/MSN | 98.4 ± 0.8 | 99.9 ± 43.1 | 110.1 ± 13.7 | −17.1 ± 0.2 |
| 3 | SA47/MSN@PDA1.1 | 90.8 ± 0.8 | 118.7 ± 27.4 | 107.8 ± 9.1 | −16.5 ± 0.5 |
| 4 | SA43/MSN@PDA3.9 | 88.0 ± 7.1 | 124.9 ± 32.0 | 109.5 ± 9.8 | −15.0 ± 0.6 |
| 5 | SA48/MSN@PDA5.3 | 96.6 ± 6.0 | 141.4 ± 44.2 | 118.1 ± 13.7 | −13.1 ± 0.5 |
| 6 | MSN@PDA12.5 | N/Ad | 139.5 ± 29.4 | 109.3 ± 10.1 | −15.0 ± 0.4 |
a
Loading contents of SA and PDA were determined by TGA and EA; see Table S1 in the ESI for details.
b
Encapsulating efficiency (mean ± standard deviation, n = 3).
c
See Fig. S1–S3 in the ESI.
d
N/A = not applicable.