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Titel: Macroporous ultramicroelectrodes for improved electroanalytical measurements
Verfasser: 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
Dokumentart : Journalartikel
Kurzfassung: 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
SciDok-Publikation: 13-Jun-2007
Fakultät: Fakultät 8 - Naturwissenschaftlich-Technische Fakultät III
Fakultät 8 - Naturwissenschaftlich-Technische Fakultät III
Fachrichtung: NT - Chemie
NT - Materialwissenschaft und Werkstofftechnik
Ehemalige Fachrichtung: bis SS 2016: Fachrichtung 8.4 - Werkstoffwissenschaften
Fakultät / Institution:NT - Naturwissenschaftlich- Technische Fakultät

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