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Gas-Triggered Gate-Opening in a Flexible Three-Dimensional Covalent Organic Framework

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Download Hi-Res ImageDownload to MS-PowerPointCite This:J. Am. Chem. Soc. 2024, 146, 16, 11411-11417
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    Gas-Triggered Gate-Opening in a Flexible Three-Dimensional Covalent Organic Framework
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    • Xiaoling Liu
      Xiaoling Liu
      College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
      Institute of Zhejiang University-Quzhou, Quzhou 324000, China
      More by Xiaoling Liu
    • Zhifang Wang
      Zhifang Wang
      State Key Laboratory of Medicinal Chemical Biology, College of Chemistry, Nankai University, Tianjin 300071, China
      More by Zhifang Wang
    • Ya Zhang
      Ya Zhang
      College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
      More by Ya Zhang
    • Na Yang
      Na Yang
      College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
      More by Na Yang
    • Bo Gui
      Bo Gui
      College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
      More by Bo Gui
      Orcidhttps://orcid.org/0000-0002-4569-526X
    • Junliang Sun
      Junliang Sun
      College of Chemistry and Molecular Engineering, Beijing National Laboratory for Molecular Sciences, Peking University, Beijing 100871, China
      More by Junliang Sun
      Orcidhttps://orcid.org/0000-0003-4074-0962
    • Cheng Wang*
      Cheng Wang
      College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China
      *Email: [email protected]
      More by Cheng Wang
      Orcidhttps://orcid.org/0000-0003-0326-2674
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    Journal of the American Chemical Society

    Cite this: J. Am. Chem. Soc. 2024, 146, 16, 11411–11417
    Click to copy citationCitation copied!
    https://doi.org/10.1021/jacs.4c01331
    Published April 14, 2024
    Copyright © 2024 American Chemical Society
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    Abstract

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    The development of novel soft porous crystals (SPCs) that can be transformed from nonporous to porous crystals is significant because of their promising applications in gas storage and separation. Herein, we systematically investigated for the first time the gas-triggered gate-opening behavior of three-dimensional covalent organic frameworks (3D COFs) with flexible building blocks. FCOF-5, a 3D COF containing C–O single bonds in the backbone, exhibits a unique “S-shaped” isotherm for various gases, such as CO2, C2, and C3 hydrocarbons. According to in situ characterization, FCOF-5 undergoes a pressure-induced closed-to-open structural transition due to the rotation of flexible C–O single bonds in the framework. Furthermore, the gated hysteretic sorption property of FCOF-5 can enable its use as an absorbent for the efficient removal of C3H4 from C3H4/C3H6 mixtures. Therefore, 3D COFs synthesized from flexible building blocks represent a new type of SPC with gate-opening characteristics. This study will strongly inspire us to design other 3D COF-based SPCs for interesting applications in the future.

    Copyright © 2024 American Chemical Society

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    Supporting Information

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    The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/jacs.4c01331.

    • Detailed information including synthetic procedures, gas sorption isotherms, enthalpy of gate opening, and crystal structure analysis (PDF)

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    Cited By

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    This article is cited by 3 publications.

    1. Shan Liu, Lei Wei, Tengwu Zeng, Wentao Jiang, Yu Qiu, Xuan Yao, Qisheng Wang, Yingbo Zhao, Yue-Biao Zhang. Single-Crystal Dynamic Covalent Organic Frameworks for Adaptive Guest Alignments. Journal of the American Chemical Society 2024, 146 (49) , 34053-34063. https://doi.org/10.1021/jacs.4c13377
    2. Fuxiang Wen, Kai Xu, Yaoqian Feng, Ning Huang. Two-Dimensional Covalent Organic Frameworks with Pentagonal Pores. Journal of the American Chemical Society 2024, 146 (29) , 19680-19685. https://doi.org/10.1021/jacs.4c06438
    3. Shuai Li, Liang Qiao, Yan Cui, Kebin Chi. Covalent organic frameworks for hydrocarbons separation. Chinese Science Bulletin 2024, 32 https://doi.org/10.1360/TB-2024-0758
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    Journal of the American Chemical Society

    Cite this: J. Am. Chem. Soc. 2024, 146, 16, 11411–11417
    Click to copy citationCitation copied!
    https://doi.org/10.1021/jacs.4c01331
    Published April 14, 2024
    Copyright © 2024 American Chemical Society
    Request reuse permissions

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