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Type: Journal article
Title: Voltammetric and electrochemical impedance study of ferrocenyl containing beta-peptide monolayers on gold
Author: Brooksby, P.
Anderson, K.
Downard, A.
Abell, A.
Citation: The Journal of Physical Chemistry C: Energy Conversion and Storage, Optical and Electronic Devices, Interfaces, Nanomaterials, and Hard Matter, 2011; 115(15):7516-7526
Publisher: American Chemical Society
Issue Date: 2011
ISSN: 1932-7447
Statement of
Paula A. Brooksby, Kelly H. Anderson, Alison J. Downard, and Andrew D. Abell
Abstract: An investigation of the kinetics of electron transfer though a self-assembled monolayer containing long chain alkanethiol and β-peptide components and a terminating ferrocene group has been carried out at a polycrystalline gold electrode. Cyclic voltammetry and electrochemical impedance spectroscopy in aqueous and mixed aqueous-methanol solutions showed the rate of electron transfer varied from approximately 5 in water to 29 s-1 in methanol. This difference is attributed to a change in the alkanethiol tilt angle in the film in response to hydrogen bonding disruption of the peptide to allow greater molecular motion during electron transfer. © 2011 American Chemical Society.
Rights: Copyright 2011 American Chemical Society
DOI: 10.1021/jp112278g
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