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Electrochromic two-dimensional covalent organic framework with a reversible dark-to-transparent switch

Author

Listed:
  • Fei Yu

    (Nanyang Technological University
    Nanjing University of Information Science & Technology)

  • Wenbo Liu

    (Nanyang Technological University)

  • Si-Wen Ke

    (Nanjing University)

  • Mohamedally Kurmoo

    (Université de Strasbourg)

  • Jing-Lin Zuo

    (Nanjing University)

  • Qichun Zhang

    (Nanyang Technological University
    City University of Hong Kong)

Abstract

Electrochromic (EC) materials with a dark-to-transmissive switch have great applications in optical communications, infrared wavelength detectors for spacecraft, and infrared camouflage coatings. However, such electroactive materials with high stability and cyclability are rare. Considering the advantages of the donor-acceptor approach (wide-range tuneable band position) and porous two-dimensional (2D) covalent organic framework (COF, well-ordered crystalline framework with stable structure and high surface area), in this work we constructed an extended delocalised π-electron layered dark purple EC-COF-1 by reacting the donor N,N,N′,N′-tetrakis(p-aminophenyl)-p-benzenediamine (TPBD) with the acceptor 2,1,3-benzothiadiazole-4,7-dicarboxaldehyde (BTDD). A sandwiched device made of EC-COF-1 exhibits the two-band bleaching (370 nm and 574 nm) in the visible region and becomes transparent under the applied potential with an induced absorption centring at 1400 nm. This discovery of a stable dark-to-transmissive switch in COF might open another door for their application in many EC devices for various purposes.

Suggested Citation

  • Fei Yu & Wenbo Liu & Si-Wen Ke & Mohamedally Kurmoo & Jing-Lin Zuo & Qichun Zhang, 2020. "Electrochromic two-dimensional covalent organic framework with a reversible dark-to-transparent switch," Nature Communications, Nature, vol. 11(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-19315-6
    DOI: 10.1038/s41467-020-19315-6
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    Cited by:

    1. Qing Hao & Xiao-Rui Ren & Yichen Chen & Chao Zhao & Jingyi Xu & Dong Wang & Hong Liu, 2023. "A sweat-responsive covalent organic framework film for material-based liveness detection and sweat pore analysis," Nature Communications, Nature, vol. 14(1), pages 1-8, December.
    2. Wen Ye & Liangdan Zhao & Hong-Zhen Lin & Lifeng Ding & Qiang Cao & Ze-Kun Chen & Jia Wang & Qi-Meng Sun & Jing-Hui He & Jian-Mei Lu, 2023. "Halide Perovskite glues activate two-dimensional covalent organic framework crystallites for selective NO2 sensing," Nature Communications, Nature, vol. 14(1), pages 1-9, December.

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