Semi-empirical treatment of ionophore-assisted ion-transfers in ultrathin membranes coupled to a redox conducting polymer

Applying spectroelectrochemistry to all-solid-state electrodes composed of poly(3-octylthiophene) (POT) and an ultrathin ion-selective membrane on top, it is possible monitor the dynamic charge transfer (CT) in POT when this event coupled ion transfers (ITs) promoted by absence/presence a selective ionophore membrane. Herein, we report combination empirical theoretical evidence revealing that different molar ratios cation exchanger result modulation non-assisted assisted ITs stoichiometries. This occurs upon same anodic voltammetric scan. The use developed theory together with Sigmoidal−Boltzmann fittings experimental absorbance observed film permits calculating voltammograms ITs. An easy semi-empirical treatment additionally provides calculation binding constants related transfers. Furthermore, approach suitable for both preferred non-preferred ions ionophore, which leads estimation selectivity profile POT-membrane system. extra discovery about number electrons associated CT expected propitiate further research towards maximizing peak resolution experiments. In context, would help future steps prediction responses multi-ionophore membranes backside contacted new redox materials, prospecting hence multi-ion detection optimized analytical features.