Color-tuning neutrality for soluble black-to-transmissive electrochromics via solution co-processing

Zhen Xu,Bozhen Wang,Lingqian Kong,Jinsheng Zhao,Yan Zhang

European Polymer Journal（2022）

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摘要

•Copolymers ECP-B and ECP-R based on (2,2′-biindoline)-3,3′-dione or benzotriazole were synthesized.•The ECP-B and ECP-R are novel, soluble processable, and exhibit electrochromic properties.•The neutral-state black film ECP-2 with full visible absorption was obtained in 1:2 mass ratio of ECP-R to ECP-B.•The ECP-2 exhibits reversible electrochromic switching, fast response time, high contrast, and high efficiency.

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关键词

Chemical polymerization,Donor-π-acceptor type,Solution co-processing,Black-to-transmissive,Electrochromic polymers

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