Outcome of the CuAAC and photo-activated thiol–yne reactions. Note: calculations exclude glycerol backbone, and only account for PEG MW. See ESI for total compositional analysis.
| Structure | Entry | PEG MW/PFPE Chain | PFPE Mn (19F NMR) | Conversion(1H NMR) | Physical aspect at 30% wt in HFE 7500 |
|---|---|---|---|---|---|
| Linear PFPE–PEG triazole linked triblock | (12) | ∼300 g mol−1 | 5840 | 95% | Cloudy and yellowish with streaks |
| Brush-like sulfide linked PFPE–PEG | (13) | ∼300 g mol−1 | 5840 | 71% | Clear and yellowish |
| 3-arm star PFPE–PEG triazole linked tetrablock | (14) | ∼300 g mol−1 | 5840 | 70% | Clear and very pale yellow |
| Hyperbranched sulfide linked PFPE–PEG | (15) | ∼600 g mol−1 | 5840 | 65% | Cloudy and yellowish with streaks |