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Pillararene incorporated metal–organic frameworks for supramolecular recognition and selective separation

Author

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  • Yitao Wu

    (Zhejiang University
    Zhejiang University)

  • Meiqi Tang

    (Zhejiang University)

  • Zeju Wang

    (Zhejiang University
    Zhejiang University)

  • Le Shi

    (Zhejiang University
    Zhejiang University)

  • Zhangyi Xiong

    (Zhejiang University
    Zhejiang University)

  • Zhijie Chen

    (Zhejiang University
    Zhejiang University)

  • Jonathan L. Sessler

    (The University of Texas at Austin)

  • Feihe Huang

    (Zhejiang University
    Zhejiang University)

Abstract

Crystalline frameworks containing incorporated flexible macrocycle units can afford new opportunities in molecular recognition and selective separation. However, such functionalized frameworks are difficult to prepare and challenging to characterize due to the flexible nature of macrocycles, which limits the development of macrocycle-based crystalline frameworks. Herein, we report the design and synthesis of a set of metal–organic frameworks (MOFs) containing pillar[5]arene units. The pillar[5]arene units were uniformly embedded in the periodic frameworks. Single crystal X-ray diffraction analysis revealed an interpenetrated network that appears to hinder the rotation of the pillar[5]arene repeating units in the frameworks, and it therefore resulted in the successful determination of the precise pillar[5]arene host structure in a MOF crystal. These MOFs can recognize paraquat and 1,2,4,5-tetracyanobenzene in solution and selectively remove trace pyridine from toluene with relative ease. The work presented here represents a critical step towards the synthesis of macrocycle-incorporated crystalline frameworks with well-defined structures and functional utility.

Suggested Citation

  • Yitao Wu & Meiqi Tang & Zeju Wang & Le Shi & Zhangyi Xiong & Zhijie Chen & Jonathan L. Sessler & Feihe Huang, 2023. "Pillararene incorporated metal–organic frameworks for supramolecular recognition and selective separation," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-40594-2
    DOI: 10.1038/s41467-023-40594-2
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    References listed on IDEAS

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    1. Modla, G., 2013. "Energy saving methods for the separation of a minimum boiling point azeotrope using an intermediate entrainer," Energy, Elsevier, vol. 50(C), pages 103-109.
    2. Yang Jiao & Yunyan Qiu & Long Zhang & Wei-Guang Liu & Haochuan Mao & Hongliang Chen & Yuanning Feng & Kang Cai & Dengke Shen & Bo Song & Xiao-Yang Chen & Xuesong Li & Xingang Zhao & Ryan M. Young & Ch, 2022. "Electron-catalysed molecular recognition," Nature, Nature, vol. 603(7900), pages 265-270, March.
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