Cobalt(II) — Cyanometallates as New Inorganic Polymeric Materials for Surface‐Modification of Some Conducting Substrates

Cobalt cyanometallate thin film modified electrodes have been prepared and also electrochemically and spectroscopically characterized. Results showed that these films can be considered as novel Prussian Blue analogues. The selective cation transport into or out of these films has been explained in terms of the effective ionic radii and the channel size in the film lattice whereas other factors can not be negligible. On the other hand, the high redox‐reversibility and high stability of the modified electrodes make them potentially attractive in application of catalysis and electrochromism.