Fig. 5: Charge symmetry breaking in PMPC.
a Chemical formula of PMPC. b Titration curve of PMPC (63 mM in 1 mL of Milli Q water) showing that PMPC is neutral at the experimental pH 7. c PMPC translocates to the negative electrode acting like a polycation. d PMPC does not translocate to the positive electrode. In (c) and (d), 50 nM PMPC in 3.6 M LiCl buffered at pH 3.7 with 10 mM HEPES was used. Pore diameter: 2.8 nm, voltage: 300 mV, sampling rate: 250 kHz, low-pass filter frequency: 10 kHz.
