Table 1.
1H NMR and SEC analyses for PMA (targeted DPn=50) with different headspace volumes.[a]
| Headspace [mL] |
t
[b]
[h] |
Deoxygenation Process |
M
n, th.
[g mol−1] |
M n, SEC [c] | Đ |
|---|---|---|---|---|---|
| – | 4 | FPT | 4400 | 5300 | 1.08 |
| 0 | 4 | none | 4300 | 5200 | 1.07 |
| 12 | 6 | none | 4300 | 6200 | 1.07 |
| 20 | 11 | none | 4300 | 6600 | 1.10 |
[a] [MA]/[EBiB]/[CuBr2]/[Me6Tren]=50:1:0.05:0.18 in DMSO (50 %, v/v) solvent. [b] Based on kinetics (see Figure S4 and Table S1b the Supporting Information). [c] Determined by THF SEC analysis and expressed as molecular‐weight equivalents to PMMA standards (see Figure S1b and Table S1a). FPT=Freeze‐pump‐thaw.