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The host–guest inclusion driven by host-stabilized charge transfer for construction of sequentially red-shifted mechanochromic system

Author

Listed:
  • Dongdong Sun

    (Wuhan University of Science and Technology)

  • Yong Wu

    (Wuhan University of Science and Technology)

  • Xie Han

    (Wuhan University of Science and Technology
    Wuhan University of Science and Technology)

  • Simin Liu

    (Wuhan University of Science and Technology
    Wuhan University of Science and Technology)

Abstract

Developing more extensive methods to understand the underlying structure-property relationship of mechanochromic luminescent molecules is demanding but remains challenging. Herein, the effect of host-guest interaction on the mechanochromic properties of organic molecules is illustrated. A series of pyridinium-functionalized triphenylamine derivatives show bathochromic-shifted emission upon mechanical stimulation. These derivatives bind to cucurbit[8]uril to form homoternary host-guest inclusion complexes through host-stabilized intermolecular charge transfer interactions. Remarkably, the homoternary complexes exhibit longer emission than that of free guests in the solid state (even longer than ground guests), and a further bathochromic-shifted emission is observed upon grinding. Additionally, a heteroternary complex constructed through the encapsulation of pyrene (donor) and pyridinium (acceptor) guest pair in cucurbit[8]uril also displays the mechanochromic luminescent property. This work not only discloses the effect of host-guest inclusion on the mechanochromic property of organic molecules, but also provides a principle and a facile way to design the sequentially red-shifted mechanochromic materials.

Suggested Citation

  • Dongdong Sun & Yong Wu & Xie Han & Simin Liu, 2023. "The host–guest inclusion driven by host-stabilized charge transfer for construction of sequentially red-shifted mechanochromic system," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-39956-7
    DOI: 10.1038/s41467-023-39956-7
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    References listed on IDEAS

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    1. Weijun Zhao & Zikai He & Qian Peng & Jacky W. Y. Lam & Huili Ma & Zijie Qiu & Yuncong Chen & Zheng Zhao & Zhigang Shuai & Yongqiang Dong & Ben Zhong Tang, 2018. "Highly sensitive switching of solid-state luminescence by controlling intersystem crossing," Nature Communications, Nature, vol. 9(1), pages 1-8, December.
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    Cited by:

    1. Jia-Rui Wu & Gengxin Wu & Dongxia Li & Meng-Hao Li & Yan Wang & Ying-Wei Yang, 2023. "Grinding-induced supramolecular charge-transfer assemblies with switchable vapochromism toward haloalkane isomers," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
    2. Pengqing Bi & Tao Zhang & Yuanyuan Guo & Jianqiu Wang & Xian Wei Chua & Zhihao Chen & Wei Peng Goh & Changyun Jiang & Elbert E. M. Chia & Jianhui Hou & Le Yang, 2024. "Donor-acceptor bulk-heterojunction sensitizer for efficient solid-state infrared-to-visible photon up-conversion," Nature Communications, Nature, vol. 15(1), pages 1-11, December.

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