Electrochromism of poly(pyrrole) film on Au nano-brush electrode

Au nano-brush membranes were prepared by a modified template method. Poly(pyrrole) (PPy) films were immobilized by an electropolymerization with the product membrane as the working electrode. In contrast to the PPy film on an Au planar electrode, the PPy film on the nano-brush electrode showed a higher electrochemical stability for the continuous cyclic polarization. Based on the measurement of the reflectance using a simple two-electrode device, a fine electrochromic performance including the switching response and repetition stability was obtained from the device with the PPy film on the Au nano-brush electrode.