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Understanding the AIE phenomenon of nonconjugated rhodamine derivatives via aggregation-induced molecular conformation change

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  • Lin-Lin Yang

    (Guizhou University, Huaxi District
    The Chinese University of Hong Kong, Shenzhen (CUHK-Shenzhen))

  • Haoran Wang

    (The Chinese University of Hong Kong, Shenzhen (CUHK-Shenzhen)
    The Hong Kong University of Science and Technology
    HKUST Shenzhen Research Institute)

  • Jianyu Zhang

    (The Hong Kong University of Science and Technology)

  • Bo Wu

    (The Chinese University of Hong Kong, Shenzhen (CUHK-Shenzhen))

  • Qiyao Li

    (The Chinese University of Hong Kong, Shenzhen (CUHK-Shenzhen))

  • Jie-Ying Chen

    (Guizhou University, Huaxi District)

  • A-Ling Tang

    (Guizhou University, Huaxi District)

  • Jacky W. Y. Lam

    (The Hong Kong University of Science and Technology)

  • Zheng Zhao

    (The Chinese University of Hong Kong, Shenzhen (CUHK-Shenzhen)
    HKUST Shenzhen Research Institute)

  • Song Yang

    (Guizhou University, Huaxi District)

  • Ben Zhong Tang

    (The Chinese University of Hong Kong, Shenzhen (CUHK-Shenzhen)
    The Hong Kong University of Science and Technology
    HKUST Shenzhen Research Institute)

Abstract

The bottom-up molecular science research paradigm has greatly propelled the advancement of materials science. However, some organic molecules can exhibit markedly different properties upon aggregation. Understanding the emergence of these properties and structure-property relationship has become a new research hotspot. In this work, by taking the unique closed-form rhodamines-based aggregation-induced emission (AIE) system as model compounds, we investigated their luminescent properties and the underlying mechanism deeply from a top-down viewpoint. Interestingly, the closed-form rhodamine-based AIE system did not display the expected emission behavior under high-viscosity or low-temperature conditions. Alternatively, we finally found that the molecular conformation change upon aggregation induced intramolecular charge transfer emission and played a significant role for the AIE phenomenon of these closed-form rhodamine derivatives. The application of these closed-form rhodamine-based AIE probe in food spoilage detection was also explored.

Suggested Citation

  • Lin-Lin Yang & Haoran Wang & Jianyu Zhang & Bo Wu & Qiyao Li & Jie-Ying Chen & A-Ling Tang & Jacky W. Y. Lam & Zheng Zhao & Song Yang & Ben Zhong Tang, 2024. "Understanding the AIE phenomenon of nonconjugated rhodamine derivatives via aggregation-induced molecular conformation change," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-45271-6
    DOI: 10.1038/s41467-024-45271-6
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    References listed on IDEAS

    as
    1. Yu-Dong Yang & Xiaofan Ji & Zhi-Hao Lu & Jian Yang & Chao Gao & Haoke Zhang & Ben Zhong Tang & Jonathan L. Sessler & Han-Yuan Gong, 2020. "Time-dependent solid-state molecular motion and colour tuning of host-guest systems by organic solvents," Nature Communications, Nature, vol. 11(1), pages 1-8, December.
    2. Ji Qi & Leyan Feng & Xiaoyan Zhang & Haoke Zhang & Liwen Huang & Yutong Zhou & Zheng Zhao & Xingchen Duan & Fei Xu & Ryan T. K. Kwok & Jacky W. Y. Lam & Dan Ding & Xue Xue & Ben Zhong Tang, 2021. "Facilitation of molecular motion to develop turn-on photoacoustic bioprobe for detecting nitric oxide in encephalitis," Nature Communications, Nature, vol. 12(1), pages 1-11, December.
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