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Start Over Author "Kuhn, Alexander" Journal analytical chemistry
9 results on '"Kuhn, Alexander"'

2. Macroporous ultramicroelectrodes for improved electroanalytical measurements

Author

Szamocki, Rafael, Velichko, Alexandra, Holzapfel, Christian, Mucklich, Frank, Ravaine, Serge, Garrigue, Patrick, Sojic, Neso, Hempelmann, Rolf, and Kuhn, Alexander

Subjects
Nanotechnology -- Research, Microelectrodes -- Chemical properties, Electrochemical analysis, Chemistry
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.

Published
2007

4. Enhanced Bipolar Electrochemistry at Solid-State Micropores: Demonstration by Wireless Electrochemiluminescence Imaging

Author

Ismail, Abdulghani, primary, Voci, Silvia, additional, Pham, Pascale, additional, Leroy, Loïc, additional, Maziz, Ali, additional, Descamps, Lucie, additional, Kuhn, Alexander, additional, Mailley, Pascal, additional, Livache, Thierry, additional, Buhot, Arnaud, additional, Leichlé, Thierry, additional, Bouchet-Spinelli, Aurélie, additional, and Sojic, Neso, additional

Published
2019
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