Fig. 6. PFM (a) amplitude voltage butterfly loop (off state) and (b) phase voltage hysteresis loop (off state) obtained for NDI-PEP-L in the kinetically aggregated state (KS II). PFM (c) amplitude voltage butterfly loop (off state) and (d) phase voltage hysteresis loop (off state) obtained for NDI-PEP-L in the thermodynamically aggregated state (TS).