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Please use this identifier to cite or link to this item: http://hdl.handle.net/2262/41152

Title: Effect of external magnetic fields on electron transfer and ion pairing dynamics at ferrocenyl alkane thiol SAM/solution interfaces
Author: KEELEY, GARETH
LYONS, MICHAEL EDWARD
Sponsor: Higher Education Authority
Enterprise Ireland
Irish Research Council for Science Engineering and Technology
Author's Homepage: http://people.tcd.ie/melyons
Keywords: Electrochemistry
redox switching
Issue Date: 2010
Citation: Michael E G Lyons, Ray O'Brien, Michael Kinsella, Conchúir Mac Gloinn, Gareth P. Keeley and P. Noelle Scully, Effect of external magnetic fields on electron transfer and ion pairing dynamics at ferrocenyl alkane thiol SAM/solution interfaces, Electrochemistry Communications, 12, 2010, 1527 - 1530
Series/Report no.: Electrochemistry Communications
12
Abstract: The redox behaviour of ferrocene alkane thiol self assembled monolayer modified electrodes in contact with aqueous perchlorate solutions both in the absence of and in the presence of an external magnetic field is examined using both electrochemical and gravimetric techniques The redox switching process involves an ET reaction involving the ferrocene/ferricinium redox transition coupled with an ion pairing step involving perchlorate ion. The voltammetric response recorded in the latter medium is irreversibly effected by the imposition of a static magnetic field of magnitude 0.5 T applied in a direction parallel to the electrode surface. The magnetic field dependence of the redox behaviour is attributed to structural changes in the monolayer arising from double layer effects involving changes in the spatial distribution of perchlorate counterions at the monolayer/solution interface, brought about by local convective stirring arising from the B field generated magnetohydrodynamic Lorenz body force.
Description: PUBLISHED
URI: http://hdl.handle.net/2262/41152
Related links: http://dx.doi.org/10.1016/j.elecom.2010.08.025
Appears in Collections:Chemistry (Scholarly Publications)

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