Ready-to-use polymeric films used as the electrified liquid-liquid interface supports.

In this work, we have tested two commercially available polymeric films: one with natural porosity (polyvinylidene difluoride - PVDF) and the other modified to include micropores (ethylene-vinyl acetate - EVA) created through needle puncturing. Subsequently, these films were successfully employed for the miniaturization of the electrified liquid-liquid interface formed between water and 1,2-dichloroethane solutions. The geometry of the membranes was assessed with confocal microscopy, the aqueous phase wettability was evaluated with a drop-shape analyzer whereas their ability to support the electrified liquid-liquid interfaces was followed with ion transfer voltammetry. Finally, the resulting platforms were applied to the electroanalytical detection of 2-phenylethylamine.