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 hdl:20.500.11880/22387 http://dx.doi.org/10.22028/D291-22331 |
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 |
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R.Szamocki_Macroporous_Ultramicroelectrodes_for_Improved_electroanalytical_measurements.pdf | 351,38 kB | Adobe PDF | View/Open |
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