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- Title
Direct Monitoring of Ultrafast Redox Commutation at the Nanosecond and Nanometer Scales by Ultrafast Voltammetry: From Molecular Wires to Cation Releasing Systems.
- Authors
Amatore, Christian; Maisonhaute, Emmanuel; Nierengarten, Jean-François; Schöllhorn, Bernd
- Abstract
This review documents that, contrary to the general impression that molecular electrochemistry is mostly devoted to the analysis of reaction mechanisms induced by electron transfer into homogeneous solutions of molecules, its concepts and methods are perfectly suited to the investigation of extremely fast molecular events occurring within nano- and sub-nanometric distances from a working electrode surface. Ultrafast cyclic voltammetry (i.e., up to the range of a few megavolts per second) coupled to online electronic compensation of ohmic drop is thus shown to provide direct measurements of extremely fast electron transfer between redox centers tethered to electrodes, by conducting molecular bridges, or of dendrimers adsorbed onto the electrode surface. This allows discussing in particular the role of counterions in the process of electronic commutation of self-assembled monolayers.
- Subjects
ELECTROCHEMICAL analysis; CHARGE exchange; NANOTECHNOLOGY; ANODES; REACTION mechanisms (Chemistry); SCIENTIFIC experimentation
- Publication
Israel Journal of Chemistry, 2008, Vol 48, Issue 3/4, p203
- ISSN
0021-2148
- Publication type
Article
- DOI
10.1560/IJC.48.3-4.203