Bisferrocenyl-functionalized pseudopeptides: access to separated ionic and electronic contributions for electrochemical anion sensing

作者：Pandey Mrituanjay D; Marti Centelles Vicente; Isabel Burguete M; Montoya Noemi; Luis Santiago V^*; Garcia Espana Enrique^*; Domenech Carbo Antonio^*

来源：RSC Advances, 2016, 6(42): 35257-35266.

DOI：10.1039/c6ra04482d

Pseudopeptidic receptors containing ferrocene fragments have been prepared and their response to a series of anions was measured by a voltammetry of microparticles methodology. Such water-insoluble compounds yield anion-assisted reversible solid-state oxidations differing in their open-circuit potential and their midpeak potential recorded in cyclic voltammetric measurements. The difference between those potentials provides the individual thermodynamic contributions of electron and proton transfer, revealing that the mechanism of an ion-sensitive electrode can differ in potentiometry and voltammetry. The studied receptors are potentially interesting for potentiometric sensing, showing relatively high selectivity for H2PO4- and HPO42- anions.

• 出版日期2016