Poly(3-buthyl-co-3,4-dibuthylthiophene)s: synthesis and electrochromic characterization

We have prepared a series of soluble, processable copolymers containing both 3-buthylthiophene and 3,4-dibuthylthiophene units in well defined percentages. The modification of the copolymer composition produces materials with various π-electron conjugation length and with diverse electrochromic properties tested for applications in electrochromic devices.