Orange to green switching anthraquinone-based electrochromic material

Kim Bini, Desta Antenehe Gedefaw, Caroline Pan, Jonas M. Bjuggren, Anirudh Sharma, Ergang Wang, Mats R. Andersson

Research output: Contribution to journalArticlepeer-review

Abstract

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.

Original languageEnglish
Article number47729
Number of pages6
JournalJournal of Applied Polymer Science
Volume136
Issue number27
DOIs
Publication statusPublished - 2019

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