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Stepwise taming of triplet excitons via multiple confinements in intrinsic polymers for long-lived room-temperature phosphorescence

Author

Listed:
  • Liang Gao

    (Chongqing University of Technology)

  • Jiayue Huang

    (Chongqing University of Technology)

  • Lunjun Qu

    (Chongqing University of Technology)

  • Xiaohong Chen

    (Chongqing University of Technology)

  • Ying Zhu

    (Chongqing University of Technology)

  • Chen Li

    (Chongqing University of Technology)

  • Quanchi Tian

    (Chongqing University of Technology)

  • Yanli Zhao

    (Nanyang Technological University)

  • Chaolong Yang

    (Chongqing University of Technology)

Abstract

Polymeric materials exhibiting room temperature phosphorescence (RTP) show a promising application potential. However, the conventional ways of preparing such materials are mainly focused on doping, which may suffer from phase separation, poor compatibility, and lack of effective methods to promote intersystem crossing and suppress the nonradiative deactivation rates. Herein, we present an intrinsically polymeric RTP system producing long-lived phosphorescence, high quantum yields and multiple colors by stepwise structural confinement to tame triplet excitons. In this strategy, the performance of the materials is improved in two aspects simultaneously: the phosphorescence lifetime of one polymer (9VA-B) increased more than 4 orders of magnitude, and the maximum phosphorescence quantum yield reached 16.04% in halogen-free polymers. Moreover, crack detection is realized by penetrating steam through the materials exposed to humid surroundings as a special quenching effect, and the information storage is carried out by employing the Morse code and the variations in lifetimes. This study provides a different strategy for constructing intrinsically polymeric RTP materials toward targeted applications.

Suggested Citation

  • Liang Gao & Jiayue Huang & Lunjun Qu & Xiaohong Chen & Ying Zhu & Chen Li & Quanchi Tian & Yanli Zhao & Chaolong Yang, 2023. "Stepwise taming of triplet excitons via multiple confinements in intrinsic polymers for long-lived room-temperature phosphorescence," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
  • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-43133-1
    DOI: 10.1038/s41467-023-43133-1
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