1H NMR and DMF-SEC analysis for PNiPAm with targeted DPn = 50 synthesized via N2-deoxygenated, non-deoxygenated (sealed vial) and open-to-air aqueous Cu-RDRPa.
| Conditions | Conv. b(%) | M n,SEC c | M n,th (g mol−1) | Đ | Reaction time |
|---|---|---|---|---|---|
| N2 sparging | >99 | 6200 | 5900 | 1.10 | 12 min |
| ND/sealed | >99 | 7200 | 5900 | 1.13 | 12 min |
| ND/open-air | >99 | 6800 | 5900 | 1.12 | 12 min |
a
In all polymerizations, the monomer concentration was 10 w/v % and the conditions were [I] : [DPn] : [Cu(i)Br] : [Me6Tren] = 1 : 50 : 0.4 : 0.4.
b
Conversion was calculated via1H NMR in D2O.
c
Determined by DMF-SEC analysis and expressed as molecular weight equivalents to PMMA narrow molecular weight standards.