Poly(3,4-propylenedioxythiphene) derivatives(PRs) were explored as an electrochromic polymer for high color contrast with long term bistability. As the energy level of the PRs was critical to bistability of the polymer, HOMO level of PRs was tuned and three different PRs were prepared in 3 steps. As synthesized PRs showed electrochromic color contrast (~70%) with a bistability longer than 2hr, at an optimized condition. Further increase in color contrast was obtained by optimizing the structure of electrochromic layer and monomeric units, without the decrease of bistability. Design principle and electrochromic properties of PRs in a 2-electrode device will be presented.

Design of electrochromic polymer structures based on poly(3,4-propylenedioxythiphene)s for high color contrast with long term bistability

254th National Meeting (2017)

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