1d-e). The latter signifies a rapid loss of interfacial anion exchange sites for the EDOT oligomers at the bare L|L interface. is maintained in the EDL on the organic side of the L|L interface by electrostatic interactions between the cationic oligomers and organic TB -. However, as TB -is a weakly coordinating anion, the EDOT oligomers maintain a net positive charge. The ionic nature of EDOT oligomers in the presence of BATB electrolyte is demonstrated by their measurable ion transfer across the polarisable L|L interface (see Supplementary Fig. ). The interfacial Galvani potential difference Δ o w 𝜙 IET onset for the onset of a biphasic single-