Figure 7.
(A) Background-subtracted CVs (solid lines) of the facilitated transfer of Ca2+ and Ba2+ (as 10 μM chloride salts in 10 mM CH3COOK at pH 7.1) as obtained using the glassy carbon electrode modified with a lipophilic PEDOT membrane and the oNPOE-plasticized PVC membrane doped with ETH 129. Theoretical CVs (closed circles) were obtained by the finite element simulation based on the E mechanism. (B) Scheme of the formation of 1:3 Ca2+–ionophore (ETH 129) complexes at an oNPOE-plasticized PVC membrane/water interface with a mixed solvent layer. Adapted with permission from ref. [55]. Copyright 2011 American Chemical Society.