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TPE-embedded butterfly bis-crown ether with controllable conformation and supramolecular chiroptical property

Author

Listed:
  • Xueqi Tian

    (Nanjing University of Aeronautics and Astronautics
    Jiangxi Normal University)

  • Minzan Zuo

    (Nanjing University of Aeronautics and Astronautics)

  • Yuhong Shen

    (Nanjing University)

  • Ni Mao

    (Nanjing University of Aeronautics and Astronautics)

  • Kaiya Wang

    (Nanjing University of Aeronautics and Astronautics)

  • Yanshan Sheng

    (Nanjing University of Aeronautics and Astronautics)

  • Krishnasamy Velmurugan

    (Nanjing University of Aeronautics and Astronautics)

  • Jianmin Jiao

    (Jiangxi Normal University)

  • Xiao-Yu Hu

    (Nanjing University of Aeronautics and Astronautics
    Jiangxi Normal University)

Abstract

Understanding how subtle structural differences between macrocyclic conformational isomers impact their properties and separation has garnered increasing attention in the field of supramolecular synthetic chemistry. In this work, a series of tetraphenylene (TPE)-embedded butterfly bis-crown ether macrocycles (BCE[n], n = 4–7), comprising two crown ether side rings and a TPE core, are synthesized through intramolecular McMurry coupling. Unexpectedly, the presence of flexible oligoethylene chains with varying lengths are found to influence molecular conformation via multiple intramolecular interactions, resulting in the formation of two stabilized conformers with specific semi-rigid symmetric/asymmetric structures (sym-BCE[n] and asym-BCE[n], n = 5, 6). Moreover, it is noteworthy that neither symmetric nor asymmetric conformers are present in the more rigid BCE[4] or the more flexible BCE[7]. Interestingly, these conformers display distinct fluorescence properties and host-guest binding abilities, and only sym-BCE[5] can serve as a host for chiral polymer binding, resulting in the formation of chiral supramolecular assemblies through host-guest interaction induced chirality. Moreover, both circular dichroism and circularly polarized luminescence signals of the obtained assemblies can be switched off by the addition of sodium ion, suggesting potential applications in the field of dynamic chiral materials.

Suggested Citation

  • Xueqi Tian & Minzan Zuo & Yuhong Shen & Ni Mao & Kaiya Wang & Yanshan Sheng & Krishnasamy Velmurugan & Jianmin Jiao & Xiao-Yu Hu, 2024. "TPE-embedded butterfly bis-crown ether with controllable conformation and supramolecular chiroptical property," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
  • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-51607-z
    DOI: 10.1038/s41467-024-51607-z
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    References listed on IDEAS

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    1. Jinqiao Dong & Kang Zhang & Xu Li & Yuhong Qian & Hai Zhu & Daqiang Yuan & Qing-Hua Xu & Jianwen Jiang & Dan Zhao, 2017. "Ultrathin two-dimensional porous organic nanosheets with molecular rotors for chemical sensing," Nature Communications, Nature, vol. 8(1), pages 1-14, December.
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