Zevenbergen Marcel A G, Wolfrum Bernhard L, Goluch Edgar D, Singh Pradyumna S, Lemay Serge G
Kavli Institute of Nanoscience, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands.
J Am Chem Soc. 2009 Aug 19;131(32):11471-7. doi: 10.1021/ja902331u.
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.
我们证明，一个由两个平行电极界定的、充满溶液的50纳米高腔体，其中电化学活性分子进行快速氧化还原循环，可用于测定非常快速的电子转移动力学。我们通过表明Fc(MeOH)(2)的异相速率常数敏感地取决于支持电解质的类型和浓度来说明这种能力。这些固态器件机械坚固且随时间稳定，因此有潜力成为一种广泛应用且多功能的电化学测量工具。
