The University of Southampton
University of Southampton Institutional Repository

Covalent modification of glassy carbon surface with organic redox probes through diamine linkers using electrochemical and solid-phase synthesis methodologies

Covalent modification of glassy carbon surface with organic redox probes through diamine linkers using electrochemical and solid-phase synthesis methodologies
Covalent modification of glassy carbon surface with organic redox probes through diamine linkers using electrochemical and solid-phase synthesis methodologies
Various mono-Boc-protected diamines have been covalently grafted to glassy carbon electrodes by electrochemical oxidation of the free amine. After deprotection of the Boc group, anthraquinone and nitrobenzene probes were coupled to the linkers using solid-phase coupling reactions. X-Ray photoelectron spectroscopy and cyclic voltammetry were used to monitor the coupling efficiency, effect of linker length on the surface coverage and electron transfer between the attached redox probes and electrode. The anthraquinone surface coverage was found to decrease as the chain length of alkyl diamine linker increased and the electron transfer kinetics were found to be faster for the lower coverages and the longer, more flexible linkers. In the case of nitrobenzene, there was only a slightly change in coverage with increasing linker length. This electrochemical attachment of protected diamine linkers followed by solid-phase coupling provides a very versatile methodology for attaching a wide range of molecular architectures onto glassy carbon surfaces.
4917-4927
Ghanem, Mohamed A.
cef6c814-2709-4a2f-a052-06d28d0ba04c
Chrétien, Jean-Mathieu
ae3cb8ea-7cf0-4ce1-a1d0-1a6fdfe7e311
Pinczewska, Aleksandra
dc358574-75de-4ac4-9f30-2b7f3ea151cc
Kilburn, Jeremy D.
e64ded70-825a-40ec-816b-c4605e007e7a
Bartlett, Philip N.
d99446db-a59d-4f89-96eb-f64b5d8bb075
Ghanem, Mohamed A.
cef6c814-2709-4a2f-a052-06d28d0ba04c
Chrétien, Jean-Mathieu
ae3cb8ea-7cf0-4ce1-a1d0-1a6fdfe7e311
Pinczewska, Aleksandra
dc358574-75de-4ac4-9f30-2b7f3ea151cc
Kilburn, Jeremy D.
e64ded70-825a-40ec-816b-c4605e007e7a
Bartlett, Philip N.
d99446db-a59d-4f89-96eb-f64b5d8bb075

Ghanem, Mohamed A., Chrétien, Jean-Mathieu, Pinczewska, Aleksandra, Kilburn, Jeremy D. and Bartlett, Philip N. (2008) Covalent modification of glassy carbon surface with organic redox probes through diamine linkers using electrochemical and solid-phase synthesis methodologies. Journal of Materials Chemistry, 18 (41), 4917-4927. (doi:10.1039/b809040h).

Record type: Article

Abstract

Various mono-Boc-protected diamines have been covalently grafted to glassy carbon electrodes by electrochemical oxidation of the free amine. After deprotection of the Boc group, anthraquinone and nitrobenzene probes were coupled to the linkers using solid-phase coupling reactions. X-Ray photoelectron spectroscopy and cyclic voltammetry were used to monitor the coupling efficiency, effect of linker length on the surface coverage and electron transfer between the attached redox probes and electrode. The anthraquinone surface coverage was found to decrease as the chain length of alkyl diamine linker increased and the electron transfer kinetics were found to be faster for the lower coverages and the longer, more flexible linkers. In the case of nitrobenzene, there was only a slightly change in coverage with increasing linker length. This electrochemical attachment of protected diamine linkers followed by solid-phase coupling provides a very versatile methodology for attaching a wide range of molecular architectures onto glassy carbon surfaces.

Full text not available from this repository.

More information

Published date: November 2008

Identifiers

Local EPrints ID: 145035
URI: http://eprints.soton.ac.uk/id/eprint/145035
PURE UUID: 73f168e7-c176-4cd2-8ff9-80037f441632
ORCID for Philip N. Bartlett: ORCID iD orcid.org/0000-0002-7300-6900

Catalogue record

Date deposited: 15 Apr 2010 14:48
Last modified: 17 Dec 2019 02:01

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×