Patent ID: 7808691

Claim:
An electrochromic device comprising: (a) a transparent electrode; (b) an electrochromic organic material that in a first state is not green and in a second state exhibits a green color, the electrochromic organic material exhibiting a single absorbance band, wherein the green electrochromic organic material exhibiting a single absorbance band comprises an electrochromic polymer based on a fluorinated derivative of 2,5-(2,3-dihydro- thieno[3,4][1,4]-dioxin-5-yl)-3,4-dihydroxy-thiophene, the fluorinated derivative corresponding to 2,5-(2,3-dihydro-thieno[3,4][1,4]-dioxin-5-yl)-3,4-di(R-oxy)-thiophene, with R corresponding to a fluorinated functional group; and (c) an electrolyte.