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Hydrophobic carbon dots with blue dispersed emission and red aggregation-induced emission

Author

Listed:
  • Haiyao Yang

    (South China Agricultural University
    South China Normal University)

  • Yingliang Liu

    (South China Agricultural University)

  • Zhouyi Guo

    (South China Normal University)

  • Bingfu Lei

    (South China Agricultural University)

  • Jianle Zhuang

    (South China Agricultural University)

  • Xuejie Zhang

    (South China Agricultural University)

  • Zhiming Liu

    (South China Normal University)

  • Chaofan Hu

    (South China Agricultural University)

Abstract

Carbon dots (CDs) have been studied for years as one of the most promising fluorescent nanomaterials. However, CDs with red or solid-state fluorescence are rarely reported. Herein, through a one-pot solvothermal treatment, hydrophobic CDs (H-CDs) with blue dispersed emission and red aggregation-induced emission are obtained. When water is introduced, the hydrophobic interaction leads to aggregation of the H-CDs. The formation of H-CD clusters induces the turning off of the blue emission, as the carbonized cores suffer from π-π stacking interactions, and the turning on of the red fluorescence, due to restriction of the surfaces’ intramolecular rotation around disulfide bonds, which conforms to the aggregation-induced-emission phenomenon. This on-off fluorescence of the H-CDs is reversible when the H-CD powder is completely dissolved. Moreover, the H-CD solution dispersed in filter paper is nearly colorless. Finally, we develop a reversible two switch-mode luminescence ink for advanced anti-counterfeiting and dual-encryption.

Suggested Citation

  • Haiyao Yang & Yingliang Liu & Zhouyi Guo & Bingfu Lei & Jianle Zhuang & Xuejie Zhang & Zhiming Liu & Chaofan Hu, 2019. "Hydrophobic carbon dots with blue dispersed emission and red aggregation-induced emission," Nature Communications, Nature, vol. 10(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-09830-6
    DOI: 10.1038/s41467-019-09830-6
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    Cited by:

    1. Jingang Li & Di Zhang & Zhongyuan Guo & Zhihan Chen & Xi Jiang & Jonathan M. Larson & Haoyue Zhu & Tianyi Zhang & Yuqian Gu & Brian W. Blankenship & Min Chen & Zilong Wu & Suichu Huang & Robert Kostec, 2024. "Light-driven C–H activation mediated by 2D transition metal dichalcogenides," Nature Communications, Nature, vol. 15(1), pages 1-7, December.
    2. Li, Jiurong & Li, Wenjing & Wang, Hangxiang & Zhao, Xiujian & Gong, Xiao, 2024. "Solid-state fluorescent carbon dots-based composite optical waveguide film enables transparent and high-performance luminescent solar concentrators," Applied Energy, Elsevier, vol. 358(C).
    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).

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