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Hydrogen-bonding and π-π interaction promoted solution-processable covalent organic frameworks

Author

Listed:
  • Lei Zhang

    (Sichuan University
    Peking University Shenzhen Graduate School)

  • Qiu-Hong Zhu

    (Sichuan University)

  • Yue-Ru Zhou

    (Sichuan University)

  • Shuang-Long Wang

    (Sichuan University)

  • Jie Fu

    (Sichuan University)

  • Jia-Ying Liu

    (Sichuan University)

  • Guo-Hao Zhang

    (Sichuan University)

  • Lijian Ma

    (Sichuan University)

  • Guohua Tao

    (Peking University Shenzhen Graduate School)

  • Guo-Hong Tao

    (Sichuan University)

  • Ling He

    (Sichuan University)

Abstract

Covalent organic frameworks show great potential in gas adsorption/separation, biomedicine, device, sensing, and printing arenas. However, covalent organic frameworks are generally not dispersible in common solvents resulting in the poor processability, which severely obstruct their application in practice. In this study, we develop a convenient top-down process for fabricating solution-processable covalent organic frameworks by introducing intermolecular hydrogen bonding and π-π interactions from ionic liquids. The bulk powders of imine-linked, azine-linked, and β-ketoenamine linked covalent organic frameworks can be dispersed homogeneously in optimal ionic liquid 1-methyl-3-octylimidazolium bromide after heat treatment. The resulting high-concentration colloids are utilized to create the covalent organic framework inks that can be directly printed onto the surface. Molecular dynamics simulations and the quantum mechanical calculations suggest that C‒H···π and π-π interaction between ionic liquid cations and covalent organic frameworks may promote the formation of colloidal solution. These findings offer a roadmap for preparing solution-processable covalent organic frameworks, enabling their practical applications.

Suggested Citation

  • Lei Zhang & Qiu-Hong Zhu & Yue-Ru Zhou & Shuang-Long Wang & Jie Fu & Jia-Ying Liu & Guo-Hao Zhang & Lijian Ma & Guohua Tao & Guo-Hong Tao & Ling He, 2023. "Hydrogen-bonding and π-π interaction promoted solution-processable covalent organic frameworks," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-43905-9
    DOI: 10.1038/s41467-023-43905-9
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    1. Ting Zhou & Lei Wang & Xingye Huang & Junjuda Unruangsri & Hualei Zhang & Rong Wang & Qingliang Song & Qingyuan Yang & Weihua Li & Changchun Wang & Kaito Takahashi & Hangxun Xu & Jia Guo, 2021. "PEG-stabilized coaxial stacking of two-dimensional covalent organic frameworks for enhanced photocatalytic hydrogen evolution," Nature Communications, Nature, vol. 12(1), pages 1-12, December.
    2. Peng Tan & Haifei Wang & Furui Xiao & Xi Lu & Wenhui Shang & Xiaobo Deng & Huafeng Song & Ziyao Xu & Junfeng Cao & Tiansheng Gan & Ben Wang & Xuechang Zhou, 2022. "Solution-processable, soft, self-adhesive, and conductive polymer composites for soft electronics," Nature Communications, Nature, vol. 13(1), pages 1-12, December.
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