Synergy between Twisted Conformation and Effective Intermolecular Interactions: Strategy for Efficient Mechanochromic Luminogens with High Contrast

Authors

  • Wang Zhang Yuan,

    1. Department of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, No. 800 Dongchuan Rd., Minhang District, Shanghai 200240, China
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  • Yeqiang Tan,

    1. Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
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  • Yongyang Gong,

    1. Department of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, No. 800 Dongchuan Rd., Minhang District, Shanghai 200240, China
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  • Ping Lu,

    1. State Key Laboratory for Supramolecular Structure and Materials, Jilin University, Changchun 130023, China
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  • Jacky W. Y. Lam,

    1. Department of Chemistry, State Key Laboratory of Molecular Neuroscience, Institute for Advanced Study, Division of Biomedical Engineering and Institute of Molecular, Functional Materials, The Hong Kong University of Science & Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China
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  • Xiao Yuan Shen,

    1. Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
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  • Cunfang Feng,

    1. State Key Laboratory for Supramolecular Structure and Materials, Jilin University, Changchun 130023, China
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  • Herman H-Y. Sung,

    1. Department of Chemistry, State Key Laboratory of Molecular Neuroscience, Institute for Advanced Study, Division of Biomedical Engineering and Institute of Molecular, Functional Materials, The Hong Kong University of Science & Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China
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  • Yawei Lu,

    1. Department of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, No. 800 Dongchuan Rd., Minhang District, Shanghai 200240, China
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  • Ian D. Williams,

    1. Department of Chemistry, State Key Laboratory of Molecular Neuroscience, Institute for Advanced Study, Division of Biomedical Engineering and Institute of Molecular, Functional Materials, The Hong Kong University of Science & Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China
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  • Jing Zhi Sun,

    1. Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
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  • Yongming Zhang,

    Corresponding author
    1. Department of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, No. 800 Dongchuan Rd., Minhang District, Shanghai 200240, China
    • Department of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, No. 800 Dongchuan Rd., Minhang District, Shanghai 200240, China
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  • Ben Zhong Tang

    Corresponding author
    1. Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
    2. Department of Chemistry, State Key Laboratory of Molecular Neuroscience, Institute for Advanced Study, Division of Biomedical Engineering and Institute of Molecular, Functional Materials, The Hong Kong University of Science & Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China
    3. Guangdong Innovative Research Team, SCUT-HKUST Joint Research Laboratory, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology (SCUT), Guangzhou 510640, China
    4. HKUST Shenzhen Research Institute, No. 9 Yuexing 1st RD, South Area Hi-tech Park, Nanshan, Shenzhen 518057, China
    • Department of Chemistry, State Key Laboratory of Molecular Neuroscience, Institute for Advanced Study, Division of Biomedical Engineering and Institute of Molecular, Functional Materials, The Hong Kong University of Science & Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong, China.
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Abstract

original image

A strategy towards efficient mechanochromic luminogens with high contrast is developed. The twisted propeller-like conformations and effective intermolecular interactions not only endow the luminogens with AIE characteristics and high efficiency in the crystalline state, but also render them to undergo conformational planarization and disruption in intermolecular interactions upon mechanical stimuli, resulting in remarkable changes in emission wavelength and efficiency.

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