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doi:10.22028/D291-22331
Titel: | Macroporous ultramicroelectrodes for improved electroanalytical measurements |
VerfasserIn: | Szamocki, Rafael Velichko, Alexandra Holzapfel, Christian Mücklich, Frank Ravaine, Serge Garrigues, Patrick Sojic, Neso Hempelmann, Rolf Kuhn, Alexander |
Sprache: | Deutsch |
Erscheinungsjahr: | 2007 |
Quelle: | Analytical chemistry. - 79. 2007, 2, S. 533-539 |
DDC-Sachgruppe: | 620 Ingenieurwissenschaften und Maschinenbau |
Dokumenttyp: | Journalartikel / Zeitschriftenartikel |
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 zu diesem Datensatz: | urn:nbn:de:bsz:291-scidok-11470 hdl:20.500.11880/22387 http://dx.doi.org/10.22028/D291-22331 |
Datum des Eintrags: | 13-Jun-2007 |
Fakultät: | NT - Naturwissenschaftlich- Technische Fakultät |
Fachrichtung: | NT - Chemie NT - Materialwissenschaft und Werkstofftechnik |
Ehemalige Fachrichtung: | bis SS 2016: Fachrichtung 8.4 - Werkstoffwissenschaften |
Sammlung: | SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
Dateien zu diesem Datensatz:
Datei | Beschreibung | Größe | Format | |
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R.Szamocki_Macroporous_Ultramicroelectrodes_for_Improved_electroanalytical_measurements.pdf | 351,38 kB | Adobe PDF | Öffnen/Anzeigen |
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