Summary of polymer synthesis.
| Polymer | Total yielda (%) | Yieldb (%) | M n,SEC c (kg mol−1) | Đ c | M n,NMR d (kg mol−1) |
|---|---|---|---|---|---|
| P1 (T) | 87 | 48 | 14 | 6.4 | 14 ± 0.4 |
| P2 (T2) | 93 | 28 | 29 | 2.2 | 39 ± 6 |
| P3 (TT) | 77 | 38 | 5 | >10 | 3 ± 0.1 |
| P4 (F) | 97 | 31 | 34 | 1.7 | 49 ± 6 |
| P5 (DPP) | 73 | 17 | Oligomericf | n.a.f | Oligomericf |
| P6 (IDT) | 96 | 27 | 9 | 1.4 | 29 ± 3 |
| P7 (BBDD) | 84 | 50 | 15 | 6.3 | 16 ± 2 |
| P8 (BT) | 84 | 43 | n.a.e | n.a.e | 13 ± 0.2 |
| P9 (BDD) | 82 | 67 | 90 | 1.3 | 21 ± 1 |
| P10 (NDI) | 98 | 94 | oligomericf | n.a.f | Oligomericf |
Yield of polymer before Soxhlet extraction relative to the loading of monomers and theoretical yield.
Yield of highest molecular weight fraction from Soxhlet extraction (for P1–P3 and P8, an average yield from multiple syntheses is given, see Table S5), relative to the loading of monomers and theoretical yield.
From the materials post-Soxhlet, measured by SEC at 70 °C against poly(methyl methacrylate) (PMMA) standards using dimethylformamide (DMF) with 0.1 wt% LiBr as the eluent.
From the materials post-Soxhlet, determined by end group analysis of NMR spectra recorded at 120 °C in C2D2Cl4 using a Bruker Avance NEO 600 spectrometer. Error determined by adding signal-to-noise of main chain and end-group in quadrature (Section S3.2).
Polymer did not dissolve in DMF with 0.1 wt% LiBr.
Polymers elute later than PMMA calibration suggesting oligomers, confirmed by room temperature NMR using a Bruker Avance NEO 600 spectrometer.