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New Electron-Donor/Acceptor-Substituted Tetraphenylethylenes: Aggregation-Induced Emission with Tunable Emission Color and Optical-Waveguide Behavior

Authors

  • Xinggui Gu,

    1. Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory and Photochemistry Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (P. R. China), Fax: (+86) 10-62562693
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  • Jingjing Yao,

    1. Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory and Photochemistry Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (P. R. China), Fax: (+86) 10-62562693
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  • Dr. Guanxin Zhang,

    Corresponding author
    1. Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory and Photochemistry Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (P. R. China), Fax: (+86) 10-62562693
    • Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory and Photochemistry Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (P. R. China), Fax: (+86) 10-62562693

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  • Chuang Zhang,

    1. Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory and Photochemistry Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (P. R. China), Fax: (+86) 10-62562693
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  • Dr. Yongli Yan,

    1. Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory and Photochemistry Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (P. R. China), Fax: (+86) 10-62562693
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  • Prof. Dr. Yongsheng Zhao,

    1. Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory and Photochemistry Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (P. R. China), Fax: (+86) 10-62562693
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  • Prof. Dr. Deqing Zhang

    Corresponding author
    1. Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory and Photochemistry Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (P. R. China), Fax: (+86) 10-62562693
    • Beijing National Laboratory for Molecular Sciences, Organic Solids Laboratory and Photochemistry Laboratory, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (P. R. China), Fax: (+86) 10-62562693

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Abstract

Herein, we report the synthesis of new tetraphenylethylene derivatives that feature electron-donating (methoxy) and -accepting (dicyanomethane) groups as AIE-active molecules with tunable emission colors. The crystal structures of compounds and are described and the intermolecular interactions within their crystals agree with the observation that they exhibit strong solid-state emission. Compounds exhibit typical AIE behavior and their emission maxima are red-shifted in the order: <<<. Such red-shifts are ascribed to the fact that intramolecular interactions between the electron donor and the electron acceptor become stronger with increasing number of methoxy groups. The solid-state emission colors of compounds are successfully tuned from yellow-green to red. Compound shows AIE behavior, but its emission is only slightly enhanced after aggregation and its solid shows a low quantum yield. Furthermore, microplates of compound exhibit 2D optical-waveguide behavior.

Abstract

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