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Ultralong lifetime and efficient room temperature phosphorescent carbon dots through multi-confinement structure design

Author

Listed:
  • Yuqiong Sun

    (South China Agricultural University
    Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture)

  • Shuting Liu

    (University of Connecticut)

  • Luyi Sun

    (University of Connecticut)

  • Shuangshuang Wu

    (South China Agricultural University)

  • Guangqi Hu

    (South China Agricultural University)

  • Xiaoliang Pang

    (South China Agricultural University
    Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture)

  • Andrew T. Smith

    (University of Connecticut)

  • Chaofan Hu

    (South China Agricultural University
    Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture)

  • Songshan Zeng

    (University of Connecticut)

  • Weixing Wang

    (South China University of Technology)

  • Yingliang Liu

    (South China Agricultural University
    Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture)

  • Mingtao Zheng

    (South China Agricultural University
    Maoming Branch, Guangdong Laboratory for Lingnan Modern Agriculture
    University of Connecticut)

Abstract

Room temperature phosphorescence materials have inspired extensive attention owing to their great potential in optical applications. However, it is hard to achieve a room temperature phosphorescence material with simultaneous long lifetime and high phosphorescence quantum efficiency. Herein, multi-confined carbon dots were designed and fabricated, enabling room temperature phosphorescence material with simultaneous ultralong lifetime, high phosphorescence quantum efficiency, and excellent stability. The multi-confinement by a highly rigid network, stable covalent bonding, and 3D spatial restriction efficiently rigidified the triplet excited states of carbon dots from non-radiative deactivation. The as-designed multi-confined carbon dots exhibit ultralong lifetime of 5.72 s, phosphorescence quantum efficiency of 26.36%, and exceptional stability against strong oxidants, acids and bases, as well as polar solvents. This work provides design principles and a universal strategy to construct metal-free room temperature phosphorescence materials with ultralong lifetime, high phosphorescence quantum efficiency, and high stability for promising applications, especially under harsh conditions.

Suggested Citation

  • Yuqiong Sun & Shuting Liu & Luyi Sun & Shuangshuang Wu & Guangqi Hu & Xiaoliang Pang & Andrew T. Smith & Chaofan Hu & Songshan Zeng & Weixing Wang & Yingliang Liu & Mingtao Zheng, 2020. "Ultralong lifetime and efficient room temperature phosphorescent carbon dots through multi-confinement structure design," Nature Communications, Nature, vol. 11(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-19422-4
    DOI: 10.1038/s41467-020-19422-4
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    Cited by:

    1. Yingxiang Zhai & Shujun Li & Jian Li & Shouxin Liu & Tony D. James & Jonathan L. Sessler & Zhijun Chen, 2023. "Room temperature phosphorescence from natural wood activated by external chloride anion treatment," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    2. Huai Chen & Mingyang Wei & Yantao He & Jehad Abed & Sam Teale & Edward H. Sargent & Zhenyu Yang, 2022. "Germanium silicon oxide achieves multi-coloured ultra-long phosphorescence and delayed fluorescence at high temperature," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    3. Wang, Xiaohui & Xu, Li & Ge, Shengbo & Foong, Shin Ying & Liew, Rock Keey & Fong Chong, William Woei & Verma, Meenakshi & Naushad, Mu. & Park, Young-Kwon & Lam, Su Shiung & Li, Qian & Huang, Runzhou, 2023. "Biomass-based carbon quantum dots for polycrystalline silicon solar cells with enhanced photovoltaic performance," Energy, Elsevier, vol. 274(C).
    4. Bijiang Geng & Jinyan Hu & Yuan Li & Shini Feng & Dengyu Pan & Lingyan Feng & Longxiang Shen, 2022. "Near-infrared phosphorescent carbon dots for sonodynamic precision tumor therapy," Nature Communications, Nature, vol. 13(1), pages 1-14, December.

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