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Regulating the proximity effect of heterocycle-containing AIEgens

Author

Listed:
  • Jianyu Zhang

    (The Hong Kong University of Science and Technology, Clear Water Bay)

  • Yujie Tu

    (The Hong Kong University of Science and Technology, Clear Water Bay)

  • Hanchen Shen

    (The Hong Kong University of Science and Technology, Clear Water Bay)

  • Jacky W. Y. Lam

    (The Hong Kong University of Science and Technology, Clear Water Bay)

  • Jianwei Sun

    (The Hong Kong University of Science and Technology, Clear Water Bay)

  • Haoke Zhang

    (Zhejiang University
    Zhejiang University)

  • Ben Zhong Tang

    (The Hong Kong University of Science and Technology, Clear Water Bay
    The Chinese University of Hong Kong
    AIE Institute, Guangzhou Development District)

Abstract

Proximity effect, which refers to the low-lying (n,π*) and (π,π*) states with close energy levels, usually plays a negative role in the luminescent behaviors of heterocyclic luminogens. However, no systematic study attempts to reveal and manipulate proximity effect on luminescent properties. Here, we report a series of methylquinoxaline derivatives with different electron-donating groups, which show different photophysical properties and aggregation-induced emission behaviors. Experimental results and theoretical calculation reveal the gradually changed energy levels and different coupling effects of the closely related (n,π*) and (π,π*) states, which intrinsically regulate proximity effect and aggregation-induced emission behaviors of these luminogens. With the intrinsic nature of heterocycle-containing compounds, they are utilized for sensors and information encryption with dynamic responses to acid/base stimuli. This work reveals both positive and negative impacts of proximity effect in heterocyclic aggregation-induced emission systems and provides a perspective to develop functional and responsive luminogens with aggregation-induced emission properties.

Suggested Citation

  • Jianyu Zhang & Yujie Tu & Hanchen Shen & Jacky W. Y. Lam & Jianwei Sun & Haoke Zhang & Ben Zhong Tang, 2023. "Regulating the proximity effect of heterocycle-containing AIEgens," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-39479-1
    DOI: 10.1038/s41467-023-39479-1
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    References listed on IDEAS

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