Facilitated proton transfer reactions via water autoprotolysis across oil|water interfaces. Spectroelectrochemical analysis

S.A. DASSIE

ELECTROCHIMICA ACTA

PERGAMON-ELSEVIER SCIENCE LTD

Lugar: Amsterdam; Año: 2019 vol. 299 p. 430 - 430

0013-4686

n this paper, we present an integrated experimental-theoretical approach to evaluate the spectroelectrochemicalresponse of the facilitated proton transfer processes via water autoprotolysis at the liquidjliquid(LjL) interface. The aim of these studies is to confirm theoretically and experimentally the pHgradients generated at the LjL interface using coupled electrochemical and spectroscopic techniques. Thespectroelectrochemical measurements are performed using a parallel beam configuration, where thelight beam passes at grazing incidence over the LjL interface. pH gradients generated by proton transferassisted by Quinidine via water autoprotolysis are evaluated by the direct measurement of the opticalabsorption of Thymol Blue, acting as a pH probe. Results obtained are correlated with a numerical modelconsidering all equilibria involved at both phases.