The effect of different potentials on the system was investigated next. At -1.6 V versus Ag/AgCl (entry 4) a decrease in monomer conversion (44%) and polymer yield (25%) was observed. This result was anticipated because less efficient reduction of the monomer was expected at this potential. Interestingly, a larger Mw of 6030 g/mol and a broader Đ were obtained at this potential in comparison to the standard reaction at -2.0 V versus Ag/AgCl. Relatedly, when the potential was decreased to -2.4 V versus Ag/AgCl (entry 5) there was an increase in monomer conversion (78%) and a decrease in polymer yield (28%). At this potential, a smaller Mw of 2760 g/mol was obtained. Together, these results suggest that changing the reactor potentials can be used for some control over the molecular weight of the polymer.