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Thickness of PEMs deposited on silanized silicon surfaces. From the generated AFM scans, the height of step (mean values ± SD) is presented.
| PEI | PEI/DSS/PEI | PEI/(PEI/DSS) × 2 | |
|---|---|---|---|
| HMW, pH 9.2 | 3.9 ± 2.1 | 15.4 ± 3.5 | 24.4 ± 4.5 |
| HMW, pH 6 | 3.2 ± 1.2 | 6.0 ± 1.0 | 6.7 ± 1.4 |
| LMW, pH 9.2 | 5.3 ± 1.6 | 12.9 ± 1.4 | 19.3 ± 2.3 |
| LMW, pH 6 | 1.9 ± 1.5 | 7.3 ± 1.8 | 7.8 ± 0.6 |
