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Highly sensitive switching of solid-state luminescence by controlling intersystem crossing

Author

Listed:
  • Weijun Zhao

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

  • Zikai He

    (The Hong Kong University of Science and Technology (HKUST), Clear Water Bay
    HIT Campus of University Town)

  • Qian Peng

    (Chinese Academy of Sciences)

  • Jacky W. Y. Lam

    (The Hong Kong University of Science and Technology (HKUST), Clear Water Bay
    South China University of Technology (SCUT)
    HKUST Shenzhen Research Institute)

  • Huili Ma

    (Tsinghua University
    Nanjing Tech University (NanjingTech))

  • Zijie Qiu

    (The Hong Kong University of Science and Technology (HKUST), Clear Water Bay
    South China University of Technology (SCUT)
    HKUST Shenzhen Research Institute)

  • Yuncong Chen

    (The Hong Kong University of Science and Technology (HKUST), Clear Water Bay
    South China University of Technology (SCUT)
    HKUST Shenzhen Research Institute)

  • Zheng Zhao

    (The Hong Kong University of Science and Technology (HKUST), Clear Water Bay
    South China University of Technology (SCUT)
    HKUST Shenzhen Research Institute)

  • Zhigang Shuai

    (Tsinghua University)

  • Yongqiang Dong

    (Beijing Normal University)

  • Ben Zhong Tang

    (The Hong Kong University of Science and Technology (HKUST), Clear Water Bay
    South China University of Technology (SCUT)
    HKUST Shenzhen Research Institute)

Abstract

The development of intelligent materials, in particular those showing the highly sensitive mechanoresponsive luminescence (MRL), is desirable but challenging. Here we report a design strategy for constructing high performance On–Off MRL materials by introducing nitrophenyl groups to molecules with aggregation-induced emission (AIE) characteristic. The on–off methodology employed is based on the control of the intersystem crossing (ISC) process. Experimental and theoretical investigations reveal that the nitrophenyl group effectively opens the nonradiative ISC channel to impart the high sensitivity and contrast On–Off behavior. On the other hand, the twisted AIE luminogen core endows enhanced reversibility and reduces the pressure required for the luminescence switching. Thin films can be readily fabricated from the designed materials to allow versatile applications in optical information recording and haptic sensing. The proposed design strategy thus provides a big step to expand the scope of the unique On–Off MRL family.

Suggested Citation

  • Weijun Zhao & Zikai He & Qian Peng & Jacky W. Y. Lam & Huili Ma & Zijie Qiu & Yuncong Chen & Zheng Zhao & Zhigang Shuai & Yongqiang Dong & Ben Zhong Tang, 2018. "Highly sensitive switching of solid-state luminescence by controlling intersystem crossing," Nature Communications, Nature, vol. 9(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-05476-y
    DOI: 10.1038/s41467-018-05476-y
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    Cited by:

    1. Dongdong Sun & Yong Wu & Xie Han & Simin Liu, 2023. "The host–guest inclusion driven by host-stabilized charge transfer for construction of sequentially red-shifted mechanochromic system," Nature Communications, Nature, vol. 14(1), pages 1-12, December.

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