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Six-photon upconverted excitation energy lock-in for ultraviolet-C enhancement

Author

Listed:
  • Qianqian Su

    (Shanghai University)

  • Han-Lin Wei

    (Shanghai University)

  • Yachong Liu

    (Shanghai University)

  • Chaohao Chen

    (University of Technology Sydney)

  • Ming Guan

    (Southern University of Science and Technology)

  • Shuai Wang

    (Shanghai University)

  • Yan Su

    (Agency of Science Technology and Research)

  • Haifang Wang

    (Shanghai University)

  • Zhigang Chen

    (Donghua University)

  • Dayong Jin

    (University of Technology Sydney
    Southern University of Science and Technology)

Abstract

Photon upconversion of near-infrared (NIR) irradiation into ultraviolet-C (UVC) emission offers many exciting opportunities for drug release in deep tissues, photodynamic therapy, solid-state lasing, energy storage, and photocatalysis. However, NIR-to-UVC upconversion remains a daunting challenge due to low quantum efficiency. Here, we report an unusual six-photon upconversion process in Gd3+/Tm3+-codoped nanoparticles following a heterogeneous core-multishell architecture. This design efficiently suppresses energy consumption induced by interior energy traps, maximizes cascade sensitizations of the NIR excitation, and promotes upconverted UVC emission from high-lying excited states. We realized the intense six-photon-upconverted UV emissions at 253 nm under 808 nm excitation. This work provides insight into mechanistic understanding of the upconversion process within the heterogeneous architecture, while offering exciting opportunities for developing nanoscale UVC emitters that can be remotely controlled through deep tissues upon NIR illumination.

Suggested Citation

  • Qianqian Su & Han-Lin Wei & Yachong Liu & Chaohao Chen & Ming Guan & Shuai Wang & Yan Su & Haifang Wang & Zhigang Chen & Dayong Jin, 2021. "Six-photon upconverted excitation energy lock-in for ultraviolet-C enhancement," Nature Communications, Nature, vol. 12(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-24664-x
    DOI: 10.1038/s41467-021-24664-x
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    Cited by:

    1. Zhao Jiang & Liangrui He & Zhiwen Yang & Huibin Qiu & Xiaoyuan Chen & Xujiang Yu & Wanwan Li, 2023. "Ultra-wideband-responsive photon conversion through co-sensitization in lanthanide nanocrystals," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    2. Guowei Li & Shihui Jiang & Aijun Liu & Lixiang Ye & Jianxi Ke & Caiping Liu & Lian Chen & Yongsheng Liu & Maochun Hong, 2023. "Proof of crystal-field-perturbation-enhanced luminescence of lanthanide-doped nanocrystals through interstitial H+ doping," Nature Communications, Nature, vol. 14(1), pages 1-12, December.

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