A working electrode was prepared according to the aforementioned procedure with PA[6] host, followed by 16 h of guest 1. Afterwards, the scan rate dependence was measured using an aqueous 0.2 M NaClO4 solution (pH 7). Plotting the peak current vs. the scan rate from 100 to 10 mV s -1 (100, 90, 80, 70, 60, 50, 20, 10 mV s -1 ) shows a linear dependence, which is typical for surface-bound redox species. Figure S7. Scan rate dependence experiment (a) Current vs. scan rate plot (b) CVs in aqueous 0.2 M NaClO4.