Table 1.
The Colloidal Data Of MPDA Nanoparticles Before And After PEG Modified
| Sample | DTEM (nm)a | Dh (nm)b | PDIc | Zeta Potential (mV) |
|---|---|---|---|---|
| MPDA-80 | 83±5 | 113 | 0.042 | −39.2 |
| MPDA-140 | 141±7 | 170 | 0.043 | −35.9 |
| MPDA-190 | 194±10 | 219 | 0.061 | −37.4 |
| MPDA-PEG-80 | - | 127 | 0.050 | −8.6 |
| MPDA-PEG-140 | - | 184 | 0.077 | −6.8 |
| MPDA-PEG-190 | - | 232 | 0.038 | −9.4 |
Notes: aDTEM, average diameter by measuring 30 nanoparticles from TEM images. bThe hydrodynamic diameter measured with dynamic light scattering in water. cPolydispersity index of the particle size, PDI = <μ2>/Γ2.
Abbreviations: TEM, transmission electron microscope; PDI, polydispersity index; MPDA, mesoporous polydopamine; MPDA-PEG, polyethylene glycol-modified mesoporous polydopamine.