Synthesis of oriented polyaniline flake arrays

Abstract We first report the synthesis of oriented polyaniline (PANI) flake arrays by a self-assembly method with inorganic acid as a dopant. It is found that the morphology and molecular structure depend on aniline concentration. FTIR and XRD results reveal that the oriented PANI flake arrays are in high conductive emeraldine state, which is expected to show excellent electrochemical properties. Cyclic voltammograms of I2/I– system measurement shows that the oriented PANI flake arrays present small charge-transfer resistance and high electrocatalytic activity. The oriented PANI flake arrays are expected to be useful in electrical, optical and electrochemical devices.