Study on the Electron Transfer Properties of Self-Assembled Viologen Monolayers Using QCA

The self-assembled monolayers of alkane derivatives with sulfur containing head groups on gold substrates have been widely examined recently, since the binding between S atoms and Au surface is strong. We could know it was formed monolayer onto QCM surface by self-assembly from resonant frequency shift using QCA. The measured frequency shift for V8SH was about 351 Hz. From this value, the adsorption mass was about 375 ng. The EQCM measurements revealed the anions transfer during reduction and oxidation, respectively. From the EQCM data, the well-defined shape peaks were nearly equal charges by cyclic voltammetry.