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A reversible photochromic covalent organic framework

Author

Listed:
  • Xue-Tian Li

    (Shandong Normal University)

  • Meng-Jing Li

    (Shandong Normal University)

  • Yuan-Liang Tian

    (Shandong Normal University)

  • Shu-Lin Han

    (Shandong Normal University)

  • Lei Cai

    (Shandong Normal University)

  • Hui-Chao Ma

    (Shandong Normal University)

  • Ying-Qiang Zhao

    (Shandong Normal University)

  • Gong-Jun Chen

    (Shandong Normal University)

  • Yu-Bin Dong

    (Shandong Normal University)

Abstract

Covalent organic frameworks are a type of crystalline porous materials that linked through covalent bond, and they have numerous potential applications in adsorption, separation, catalysis, and more. However, there are rarely relevant reported on photochromism. Fortunately, a hydrazone-linked DBTB-DETH-COF is rapidly generated through ultrasound method. The DBTB-DETH-COF is found to exhibit reversible photochromism (at least 50 cycles) from yellow to olive in the presence of light and air, and subsequently back to the original color upon heating. In addition, the structure of DBTB-DETH-COF remains unchanged after 15 days of light illumination. Furthermore, the reason of photochromic process is discussed by electron paramagnetic resonance, X-ray photoelectron spectroscopy, electrochemistry characterizations and transient absorption measurements. The reversible photochromic DBTB-DETH-COF can be used as anti-counterfeiting ink and optical switch in the presence of air. This work expands a stable organic photochromic material and broadens the applications of COFs.

Suggested Citation

  • Xue-Tian Li & Meng-Jing Li & Yuan-Liang Tian & Shu-Lin Han & Lei Cai & Hui-Chao Ma & Ying-Qiang Zhao & Gong-Jun Chen & Yu-Bin Dong, 2024. "A reversible photochromic covalent organic framework," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-52788-3
    DOI: 10.1038/s41467-024-52788-3
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    References listed on IDEAS

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    1. Liming Sun & Rong Li & Wenwen Zhan & Yusheng Yuan & Xiaojun Wang & Xiguang Han & Yanli Zhao, 2019. "Double-shelled hollow rods assembled from nitrogen/sulfur-codoped carbon coated indium oxide nanoparticles as excellent photocatalysts," Nature Communications, Nature, vol. 10(1), pages 1-10, December.
    2. Sarah L. Walden & Phuong H. D. Nguyen & Hao-Kai Li & Xiaogang Liu & Minh T. N. Le & Loh Xian Jun & Christopher Barner-Kowollik & Vinh X. Truong, 2023. "Visible light-induced switching of soft matter materials properties based on thioindigo photoswitches," Nature Communications, Nature, vol. 14(1), pages 1-13, December.
    3. Shuaipeng Jia & Hebo Ye & Peng He & Xin Lin & Lei You, 2023. "Selection of isomerization pathways of multistep photoswitches by chalcogen bonding," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
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