Fig. 4: Polymerization of 5-3S.

Effect of the reaction temperature and the activator concentration on Mn and Mw (Supplementary Figs. 8 and 9, Supplementary Table 11). Conditions: 1.8 mmol 5-3S, 2.0–5.5 mol% NaH on paraffin, 180 or 220 °C, 1 h. Molecular weights refer to masses over 1.0 kDa (GPC).