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Hydrodynamic diameter (in nm), zeta potential (in mV), absorption peak (λab in nm), fluorescence peak (λfl in nm), and fluorescence quantum yield (Φfl) in water of the dye-loaded silica nanoparticles without and with PEG-coated at their external surface.
| Sample | DLS (nm) |
Zpot (mV) | λab | λfl | Φfl | Brightness |
|---|---|---|---|---|---|---|
| MSN-C-R101-70 | 60 | −4.0 | - | - | - | - |
| MSN-C-R101-70-PEG | 69 | −21.0 | 572.0 | 594.0 | 0.51 | 230 |
| MSN-S-R101-60-PEG | 64 | −23.0 | 571.0 | 595.0 | 0.25 | 260 |
| R101 in water | - | - | 560.0 | 597.0 | 0.77 | 1 |
