Please use this identifier to cite or link to this item: doi:10.22028/D291-22331
Title: Macroporous ultramicroelectrodes for improved electroanalytical measurements
Author(s): Szamocki, Rafael
Velichko, Alexandra
Holzapfel, Christian
Mücklich, Frank
Ravaine, Serge
Garrigues, Patrick
Sojic, Neso
Hempelmann, Rolf
Kuhn, Alexander
Language: German
Year of Publication: 2007
OPUS Source: Analytical chemistry. - 79. 2007, 2, S. 533-539
DDC notations: 620 Engineering and machine engineering
Publikation type: Journal Article
Abstract: Recent work on the preparation of highly organized macroporous electrodes and nanoporous ultramicroelectrodes has been combined and extended to elaborate macroporous ultramicroelectrodes (UMEs) by template synthesis using colloidal crystals and following two different and complementary methods. On the one hand, arched porous UMEs were prepared, and on the other hand, cylindrical porous UMEs were obtained by using cavity UMEs. These macroporous UMEs have an active surface area which is up to 2 orders of magnitude higher compared to that of a classical disk UME as characterized by cyclic voltammetry. To study their analytical performance, the macroporous UMEs have been modified with a redox-active thiol and also a model bioelectrocatalytical system containing a redox mediator, a cofactor, and glucose-dehydrogenase. In both cases the electrochemical signal is amplified by up to 2 orders of magnitude, which increases significantly the analytical performance of such electrodes and therefore opens up new applications for this kind of miniaturized electrochemical system.
Link to this record: urn:nbn:de:bsz:291-scidok-11470
Date of registration: 13-Jun-2007
Faculty: NT - Naturwissenschaftlich- Technische Fakultät
Department: NT - Chemie
NT - Materialwissenschaft und Werkstofftechnik
Former Department: bis SS 2016: Fachrichtung 8.4 - Werkstoffwissenschaften
Collections:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

Files for this record:
File Description SizeFormat 
R.Szamocki_Macroporous_Ultramicroelectrodes_for_Improved_electroanalytical_measurements.pdf351,38 kBAdobe PDFView/Open

Items in SciDok are protected by copyright, with all rights reserved, unless otherwise indicated.