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 solidstate devices are mechanically robust and stable over time and therefore have the potential to become a widespread and versatile tool for electrochemical measurements.
|Number of pages||7|
|Journal||Journal of the American Chemical Society|
|Publication status||Published - 19 Aug 2009|