“…Among them, poly(3,4-ethylenedioxythiophene) (PEDOT) has attracted significant attention, 4 both in academic as well as in industrial labs, because of its high electrochromic contrast, low oxidation potential, better stability to air exposure at ambient and elevated temperature conditions, and faster switching speeds. Recently, Reynolds and coworkers have studied the effect of ring size on the electrochromic properties of polymers based on 3,4-alkylenedioxythiophene, and they observed that the electrochromic contrast improves on increasing the ring size and also on increasing the interchain separation by the incorporation of a [10][11][12][13] In the light of the above facts, we envisaged that poly(3,4-propylenedioxythiophene), which contains a perfluoroalkyl chain, should possess high electrochromic contrast and thermal stability. We describe herein the synthesis of perfluoroalkylated poly(3,4-propylenedioxythiophene).…”