Table 1.
Relative atomic concentration (± SD) of the TiO2 surfaces either bare or modified with PLL-g-PEG-B20% monolayers and incubated with PBS, streptavidin (200 nM), or E. coli cytoplasmic fraction (1.3 mg/ml) (emission angle 20°)
| Incubation | C, % | O, % | N, % | Ti, % | |
|---|---|---|---|---|---|
| TiO2 | — | 18.7 ± 1.5 | 57.7 ± 0.4 | 0.9 ± 0.1 | 22.7 ± 0.9 |
| TiO2 | Streptavidin | 20.1 ± 1.0 | 57.5 ± 0.6 | 1.3 ± 0.8 | 21.1 ± 1.1 |
| TiO2 | E. coli | 51.3 ± 0.0 | 29.7 ± 0.6 | 13.1 ± 0.3 | 5.9 ± 0.3 |
| PLL-g-PEG-B20% | PBS | 46.5 ± 1.3 | 42.0 ± 1.2 | 2.8 ± 0.1 | 8.7 ± 0.4 |
| PLL-g-PEG-B20% | Streptavidin | 57.6 ± 0.6 | 30.5 ± 0.3 | 8.5 ± 0.2 | 3.4 ± 0.4 |
| PLL-g-PEG-B20% | E. coli | 46.0 ± 0.4 | 41.9 ± 0.2 | 3.0 ± 0.1 | 9.1 ± 0.1 |