Journal Article

PreJuSER-9103

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Fast electron-transfer kinetics probed in nanofluidic channels

Zevenbergen, M. A. G. ; Wolfrum, B. L.FZJ* ; Goluch, E. D. ; Singh, P. S. ; Lemay, S. G.

2009
American Chemical Society Washington, DC

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Please use a persistent id in citations: doi:10.1021/ja902331u

Abstract: We demonstrate that a 50 nm high solution-filled cavity bounded by two parallel electrodes in which electrochemically active molecules undergo rapid redox cycling can be used to determine very fast electron-transfer kinetics. We illustrate this capability by showing that the heterogeneous rate constant of Fc(MeOH)(2) sensitively depends on the type and concentration of the supporting electrolyte. These solid-state devices are mechanically robust and stable over time and therefore have the potential to become a widespread and versatile tool for electrochemical measurements.

Keyword(s): J

Note: We thank Diego Krapf, Bernadette M. Quinn, Hendrik A. Heering, Iddo Heller, and Cees Dekker for discussions and general support. We acknowledge Kees Kwaker-naak for performing the XPS measurements. This work was funded by NanoNed and NWO. Bernhard Wolfrurn was funded by the DFG. Edgar D. Goluch thanks the U.S. National Science Foundation for support under IRFP Grant Number 0754396.

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Contributing Institute(s):

1. Bioelektronik (IBN-2)
2. Jülich-Aachen Research Alliance - Fundamentals of Future Information Technology (JARA-FIT)

Research Program(s):

1. Grundlagen für zukünftige Informationstechnologien (P42)

Appears in the scientific report 2009
Notes: Nachtrag

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