Table 1.
Physical characterization of surface-attached networks made from poly(oxonorbornene) homopolymers (m = 0) and copolymers (m ≠ 0). The dry layer thickness was measured by ellipsometry; the apparent surface tension was determined using the Zisman method; swellability ratios in water were determined by surface plasmon resonance spectroscopy; the maximum surface charge ζmax under acidic conditions, the surface charge under pseudo-physiological conditions (ζphys), the isoelectric point and the acid constant pK were obtained by electrokinetic measurements.[52] Copyright: Zou et al.,[52] published by The Royal Society of Chemistry, 2015.
| Dry Layer Thickness / nm | Apparent Surface Tension / mN m-1 | Swellability Ratio / H2O | ζmax / mV | Iso-electric point | ζphys / mV | pK | |
|---|---|---|---|---|---|---|---|
| Diamine | 157 ± 4 | 61.0 | 3.2 | 62 ± 3 | 7.5 ± 0.2 | 0 | 7.4 |
| Methyl | 147 ± 3 | 56.8 | 1.9 | 77 ±5 | 7.6 ± 0.2 | 7 | 7.4 |
| Ethyl | 143 ± 3 | 53.0 | 1.7 | 73 ± 4 | 7.9 ± 0.2 | 23 | 7.7 |
| Propyl | 149 ± 3 | 51.5 | 1.4 | 85 ± 2 | 7.8 ± 0.2 | 11 | 7.5 |
| Butyl | 153 ± 4 | 48.8 | 1.2 | 84 ± 1 | 7.3 ± 0.2 | -2 | 7.2 |
| B:D = 1:9 | 148 ± 3 | 58.0 | 2.3 | 50 ± 3 | 7.5 ± 0.2 | 1 | 7.2 |
| B:D = 5:5 | 158 ± 3 | 55.3 | 1.7 | 74 ± 3 | 7.6 ± 0.2 | 2 | 7.2 |
| B:D = 9:1 | 152 ± 4 | 53.5 | 1.5 | 88 ±3 | 7.5 ± 0.2 | -6 | 7.2 |