Aggregation-Induced Emission of Tetraphenylethene–Hexaphenylbenzene Adducts: Effects of Twisting Amplitude and Steric Hindrance on Light Emission of Nonplanar Fluorogens

Authors

  • Dr. Rongrong Hu,

    1. The Hong Kong University of Science & Technology, Shenzhen Research Institute, Department of Chemistry, State Key Laboratory of Molecular Neuroscience, Institute of Molecular Functional Materials and Division of Biomedical Engineering, The Hong Kong University of Science & Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong (P.R. China)
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  • Dr. Jacky W. Y. Lam,

    1. The Hong Kong University of Science & Technology, Shenzhen Research Institute, Department of Chemistry, State Key Laboratory of Molecular Neuroscience, Institute of Molecular Functional Materials and Division of Biomedical Engineering, The Hong Kong University of Science & Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong (P.R. China)
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  • Yi Liu,

    1. The Hong Kong University of Science & Technology, Shenzhen Research Institute, Department of Chemistry, State Key Laboratory of Molecular Neuroscience, Institute of Molecular Functional Materials and Division of Biomedical Engineering, The Hong Kong University of Science & Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong (P.R. China)
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  • Xiaoa Zhang,

    1. The Hong Kong University of Science & Technology, Shenzhen Research Institute, Department of Chemistry, State Key Laboratory of Molecular Neuroscience, Institute of Molecular Functional Materials and Division of Biomedical Engineering, The Hong Kong University of Science & Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong (P.R. China)
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  • Prof. Ben Zhong Tang

    Corresponding author
    1. The Hong Kong University of Science & Technology, Shenzhen Research Institute, Department of Chemistry, State Key Laboratory of Molecular Neuroscience, Institute of Molecular Functional Materials and Division of Biomedical Engineering, The Hong Kong University of Science & Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong (P.R. China)
    2. Guangdong Innovative Research Team, SCUT–HKUST Joint Research Laboratory, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology (SCUT), Guang Zhou 51064 (P.R. China)
    • The Hong Kong University of Science & Technology, Shenzhen Research Institute, Department of Chemistry, State Key Laboratory of Molecular Neuroscience, Institute of Molecular Functional Materials and Division of Biomedical Engineering, The Hong Kong University of Science & Technology (HKUST), Clear Water Bay, Kowloon, Hong Kong (P.R. China)
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Abstract

A series of nonplanar tetraphenylethene (TPE)–hexaphenylbenzene (HPB) adducts was designed and synthesized by Diels–Alder reaction of the acetylene precursors and tetraphenylcyclopentadienone. All of the adducts showed aggregation-induced emission features. The twisting amplitude and steric hindrance of the TPE and HPB units were found to play a crucial role in their fluorescence behaviors in the aggregated state.

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