Staff View: A comparative study of the modification of gold and glassy carbon surfaces with mixed layers of in situ generated aryl diazonium compounds

A comparative study of the modification of gold and glassy carbon surfaces with mixed layers of in situ generated aryl diazonium compounds

In situ generated aryl diazonium cations were synthesized in the electrochemical cell by reaction of the corresponding amines with NaNO in aqueous HCl. This paper reports a study of the formation of mixed layers from in situ generated aryl diazonium cations. Firstly, glassy carbon (GC) and gold elec...

Full description

Saved in:

Bibliographic Details
Main Authors:	Liu, G., Chockalingham, M., Khor, S.M., Gui, A.L, Gooding, J.J.
Format:	Article
Language:	English
Published:	2010
Subjects:	QD Chemistry
Online Access:	http://eprints.um.edu.my/15523/1/Electroanalysis_22%282010%29918-926_%28post-print_version%29_%28abstract%29.pdf http://eprints.um.edu.my/15523/
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my.um.eprints.15523
record_format	eprints
spelling	my.um.eprints.155232016-01-12T04:52:49Z http://eprints.um.edu.my/15523/ A comparative study of the modification of gold and glassy carbon surfaces with mixed layers of in situ generated aryl diazonium compounds Liu, G. Chockalingham, M. Khor, S.M. Gui, A.L Gooding, J.J. QD Chemistry In situ generated aryl diazonium cations were synthesized in the electrochemical cell by reaction of the corresponding amines with NaNO in aqueous HCl. This paper reports a study of the formation of mixed layers from in situ generated aryl diazonium cations. Firstly, glassy carbon (GC) and gold electrode surfaces were modified with five single in situ generated aryl diazonium salts to obtain their corresponding reductive potential followed by the modification of GC and gold surfaces with eight binary mixed layers of in situ generated aryl diazonium salts. The difference between GC and gold surfaces in terms of in situ formation of two-component aryl diazonium salt films was compared. The behavior of the mixed layers formed from in situ generated aryl diazonium salts relative to diazonium salts that were pre-synthesized prior to surface modification was also investigated. Cyclic voltammetry and X-ray photoelectron spectroscopy were used to characterize the resulting modified GC and gold surfaces. It is found that for some aryl diazonium salts the potential at which reductive adsorption is achieved on gold and GC surfaces is significantly different. For the eight sets of binary mixed layers, the species with more anodic potential are more difficult to attach to the both GC and gold surfaces. The behavior of the mixed layers formed from in situ generated aryl diazonium salts and the pre-synthesized diazonium salts is similar; which emphasizes the advantage of the in situ approach without any apparent difference in behavior to the presynthesized diazonium salts. 2010 Article PeerReviewed application/pdf en http://eprints.um.edu.my/15523/1/Electroanalysis_22%282010%29918-926_%28post-print_version%29_%28abstract%29.pdf Liu, G. and Chockalingham, M. and Khor, S.M. and Gui, A.L and Gooding, J.J. (2010) A comparative study of the modification of gold and glassy carbon surfaces with mixed layers of in situ generated aryl diazonium compounds. Electroanalysis, 22 (9). pp. 918-926.
institution	Universiti Malaya
building	UM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaya
content_source	UM Research Repository
url_provider	http://eprints.um.edu.my/
language	English
topic	QD Chemistry
spellingShingle	QD Chemistry Liu, G. Chockalingham, M. Khor, S.M. Gui, A.L Gooding, J.J. A comparative study of the modification of gold and glassy carbon surfaces with mixed layers of in situ generated aryl diazonium compounds
description	In situ generated aryl diazonium cations were synthesized in the electrochemical cell by reaction of the corresponding amines with NaNO in aqueous HCl. This paper reports a study of the formation of mixed layers from in situ generated aryl diazonium cations. Firstly, glassy carbon (GC) and gold electrode surfaces were modified with five single in situ generated aryl diazonium salts to obtain their corresponding reductive potential followed by the modification of GC and gold surfaces with eight binary mixed layers of in situ generated aryl diazonium salts. The difference between GC and gold surfaces in terms of in situ formation of two-component aryl diazonium salt films was compared. The behavior of the mixed layers formed from in situ generated aryl diazonium salts relative to diazonium salts that were pre-synthesized prior to surface modification was also investigated. Cyclic voltammetry and X-ray photoelectron spectroscopy were used to characterize the resulting modified GC and gold surfaces. It is found that for some aryl diazonium salts the potential at which reductive adsorption is achieved on gold and GC surfaces is significantly different. For the eight sets of binary mixed layers, the species with more anodic potential are more difficult to attach to the both GC and gold surfaces. The behavior of the mixed layers formed from in situ generated aryl diazonium salts and the pre-synthesized diazonium salts is similar; which emphasizes the advantage of the in situ approach without any apparent difference in behavior to the presynthesized diazonium salts.
format	Article
author	Liu, G. Chockalingham, M. Khor, S.M. Gui, A.L Gooding, J.J.
author_facet	Liu, G. Chockalingham, M. Khor, S.M. Gui, A.L Gooding, J.J.
author_sort	Liu, G.
title	A comparative study of the modification of gold and glassy carbon surfaces with mixed layers of in situ generated aryl diazonium compounds
title_short	A comparative study of the modification of gold and glassy carbon surfaces with mixed layers of in situ generated aryl diazonium compounds
title_full	A comparative study of the modification of gold and glassy carbon surfaces with mixed layers of in situ generated aryl diazonium compounds
title_fullStr	A comparative study of the modification of gold and glassy carbon surfaces with mixed layers of in situ generated aryl diazonium compounds
title_full_unstemmed	A comparative study of the modification of gold and glassy carbon surfaces with mixed layers of in situ generated aryl diazonium compounds
title_sort	comparative study of the modification of gold and glassy carbon surfaces with mixed layers of in situ generated aryl diazonium compounds
publishDate	2010
url	http://eprints.um.edu.my/15523/1/Electroanalysis_22%282010%29918-926_%28post-print_version%29_%28abstract%29.pdf http://eprints.um.edu.my/15523/
_version_	1643690073745522688
score	13.211869

A comparative study of the modification of gold and glassy carbon surfaces with mixed layers of in situ generated aryl diazonium compounds

Similar Items