Reading Oxidation States of Encapsulated Ferrocenium in Calix [4] arene Heterodimers Immobilized on Gold Dots by Means of a Scanning Electrochemical …

…, G Podoprygorina, V Böhmer, S Mittler…

Index: Xu, Songbo; Podoprygorina, Ganna; Boehmer, Volker; Ding, Zhifeng; Rooney, Patrick; Rangan, Chitra; Mittler, Silvia Organic and Biomolecular Chemistry, 2007 , vol. 5, # 3 p. 558 - 568

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Citation Number: 5

Abstract

The oxidation states of encapsulated ferrocenium (Fc+ filled in calix [4] arene heterodimers) in the form of a self-assembled monolayer (SAM) immobilized on a gold surface were recognized by a 2.2 μm diameter ultramicroelectrode (tip) in combination with scanning electrochemical microscopy (SECM). By approaching the SECM tip biased at− 0.10 V to the vicinity of the encapsulated Fc+ moieties, an electrochemical current at the tip was ...