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Orange to green switching anthraquinone‐based electrochromic material
Author(s) -
Bini Kim,
Gedefaw Desta,
Pan Caroline,
Bjuggren Jonas M.,
Sharma Anirudh,
Wang Ergang,
Andersson Mats R.
Publication year - 2019
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.47729
Subject(s) - electrochromism , materials science , polymer , stille reaction , anthraquinone , transmittance , cyclic voltammetry , band gap , homo/lumo , photochemistry , naked eye , optoelectronics , electrochromic devices , polymer chemistry , optics , chemistry , composite material , electrochemistry , electrode , organic chemistry , molecule , fluorescence , physics
An easily accessible anthraquinone‐benzodithiophene‐based high bandgap polymer (PTAq) was synthesized by Stille coupling reactions in remarkably high yield (96.5%). The highest occupied molecular orbital energy level of the polymer was estimated from the onset of oxidation in a cyclic voltammetry study to be −5.7 eV. PTAq showed an orange‐to‐green color switching with the application of a 1.0‐V external potential to the polymer film, which was visible to the naked eye. The optical behavior change was also monitored using ultraviolet–visible absorption spectroscopy and revealed a respectable 75% transmittance change when the polymer film was subjected to a 1.0‐V external potential. The high color contrast observed makes PTAq one of the most promising materials for electrochromic device applications. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 47729.
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