Fig. 5

Characterization of Hz-catalyzed precipitation polymerizations of NIPAAm. a Dynamic light scattering analysis of particle size for a polymerization catalyzed by 25 ng mL⁻¹ sHZ (mean values determined as described in the experimental section, SD). b Comparison of polymerizations catalyzed by 100 ng mL⁻¹ sHz purged with argon (blue) and conducted under normal conditions (red). c Effect of the addition of reagents during the plateau phase of the polymerization catalyzed by 100 ng mL⁻¹ sHz (at 5500 s): typical experiment (black), addition of initiator (50 µL of a 0.375 M HEBIB solution) (red), addition of monomer and reducing agent (200 µL of a 1.096 M NIPAAm and 0.110 mM NaAsc solution) (blue) and addition of biocatalyst (49.3 µL of a 2.03 µg mL⁻¹ sHz solution) (pink). The decrease in extinction after the addition of the reagents is the consequence of the dilution of the reaction mixture