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Arginine-modified black phosphorus quantum dots with dual excited states for enhanced electrochemiluminescence in bioanalysis

Author

Listed:
  • Siqi Yu

    (Nanjing University)

  • Yu Du

    (Nanjing University)

  • Xianghong Niu

    (Nanjing University of Posts and Telecommunications)

  • Guangming Li

    (Nanjing University)

  • Da Zhu

    (Nanjing University)

  • Qian Yu

    (Nanjing University)

  • Guizheng Zou

    (Shandong University)

  • Huangxian Ju

    (Nanjing University)

Abstract

The electrochemiluminescence (ECL) is generally emitted via radiative transition of singlet or triplet excited state (S1 or T1). Herein, an ECL mechanism with the transitions of both S1 and T1 of black phosphorus quantum dots (BPQDs) is found, and an arginine (Arg) modification strategy is proposed to passivate the surface oxidation defects of BPQDs, which could modulate the excited states for enhancing the ECL efficiency of BPQDs. The Arg modification leads to greater spatial overlap of highest and lowest occupied molecular orbitals, and spectral shift of radiative transitions, and improves the stability of anion radical of BPQDs. To verify the application of the proposed mechanism, it is used to construct a sensitive method for conveniently evaluating the inhibiting efficiency of cyclo-arginine-glycine-aspartic acid-d-tyrosine-lysine to cell surface integrin by using Arg containing peptide modified BPQDs as signal tag. The dual excited states mediated ECL emitters provide a paradigm for adjustable ECL generation and extend the application of ECL analysis.

Suggested Citation

  • Siqi Yu & Yu Du & Xianghong Niu & Guangming Li & Da Zhu & Qian Yu & Guizheng Zou & Huangxian Ju, 2022. "Arginine-modified black phosphorus quantum dots with dual excited states for enhanced electrochemiluminescence in bioanalysis," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-35015-9
    DOI: 10.1038/s41467-022-35015-9
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    References listed on IDEAS

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    1. Zheng-Long Xu & Shenghuang Lin & Nicolas Onofrio & Limin Zhou & Fangyi Shi & Wei Lu & Kisuk Kang & Qiang Zhang & Shu Ping Lau, 2018. "Exceptional catalytic effects of black phosphorus quantum dots in shuttling-free lithium sulfur batteries," Nature Communications, Nature, vol. 9(1), pages 1-11, December.
    2. Jundong Shao & Hanhan Xie & Hao Huang & Zhibin Li & Zhengbo Sun & Yanhua Xu & Quanlan Xiao & Xue-Feng Yu & Yuetao Zhao & Han Zhang & Huaiyu Wang & Paul K. Chu, 2016. "Biodegradable black phosphorus-based nanospheres for in vivo photothermal cancer therapy," Nature Communications, Nature, vol. 7(1), pages 1-13, December.
    3. Xianjun Zhu & Taiming Zhang & Daochuan Jiang & Hengli Duan & Zijun Sun & Mengmeng Zhang & Hongchang Jin & Runnan Guan & Yajuan Liu & Muqing Chen & Hengxing Ji & Pingwu Du & Wensheng Yan & Shiqiang Wei, 2018. "Stabilizing black phosphorus nanosheets via edge-selective bonding of sacrificial C60 molecules," Nature Communications, Nature, vol. 9(1), pages 1-9, December.
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