fig4

Figure 4. (A) Picture of homemade H-cell “static RFB”, full details available in Supplementary Figure 9. (B) Scheme of the H-cell in initial and in charged state (reduction occurring at E_w) loaded with 2 × 5 mL of 1 mM ^R1/R2DMQA^X/Y+ in 0.1 M TBAPF₆ CH₃CN. Display of 134 μAh H-cell cycling monitoring via (C) Capacity in discharge and (D) Coulombic efficiency of ^nPrDMQA⁺, ^nPrDMQA^NO2+, ^nPrDMQA^OMe+,^nPrDMQA^NH2+, ^nPrDMQA^NMe2+, ^nPrDMQA^(pMe)3+, ^(CyNHnPr)DMQA⁺ and ^PEGDMQA⁺. Supplementary Figures 10-17 provide detailed monitoring of the cycling data for each helicenium individually.