In the Electrochromic Materials and Devices activity, the unequalled potential of aqueous micellar chemistry for synthesizing nanostructured electroactive polymer films of high cosmetic quality has been demonstrated by the remarkably high electrochromic coloring efficiency, fast color-bleach speeds and outstanding durability shown by of poly (3, 4 - ethylenedioxythiophene) films and prototype electrochromic windows processed by this method.