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Bis-Schiff base linkage-triggered highly bright luminescence of gold nanoclusters in aqueous solution at the single-cluster level

Author

Listed:
  • Haohua Deng

    (Fujian Medical University)

  • Kaiyuan Huang

    (Fujian Medical University)

  • Lingfang Xiu

    (Fujian Medical University)

  • Weiming Sun

    (Fujian Medical University)

  • Qiaofeng Yao

    (National University of Singapore
    International Campus of Tianjin University, Binhai New City)

  • Xiangyu Fang

    (Fujian Medical University)

  • Xin Huang

    (Fujian Medical University)

  • Hamada A. A. Noreldeen

    (Fujian Medical University)

  • Huaping Peng

    (Fujian Medical University)

  • Jianping Xie

    (National University of Singapore
    International Campus of Tianjin University, Binhai New City)

  • Wei Chen

    (Fujian Medical University)

Abstract

Metal nanoclusters (NCs) have been developed as a new class of luminescent nanomaterials with potential applications in various fields. However, for most of the metal NCs reported so far, the relatively low photoluminescence quantum yield (QY) in aqueous solution hinders their applications. Here, we describe the utilization of bis-Schiff base linkages to restrict intramolecular motion of surface motifs at the single-cluster level. Based on Au22(SG)18 (SG: glutathione) NCs, an intracluster cross-linking system was constructed with 2,6-pyridinedicarboxaldehyde (PDA), and water-soluble gold NCs with luminescence QY up to 48% were obtained. The proposed approach for achieving high emission efficiency can be extended to other luminescent gold NCs with core-shell structure. Our results also show that the content of surface-bound Au(I)-SG complexes has a significant impact on the PDA-induced luminescence enhancement, and a high ratio of Au(I)-SG will be beneficial to increasing the photoluminescence intensity of gold NCs.

Suggested Citation

  • Haohua Deng & Kaiyuan Huang & Lingfang Xiu & Weiming Sun & Qiaofeng Yao & Xiangyu Fang & Xin Huang & Hamada A. A. Noreldeen & Huaping Peng & Jianping Xie & Wei Chen, 2022. "Bis-Schiff base linkage-triggered highly bright luminescence of gold nanoclusters in aqueous solution at the single-cluster level," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-30760-3
    DOI: 10.1038/s41467-022-30760-3
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    References listed on IDEAS

    as
    1. Shubo Tian & Yi-Zhi Li & Man-Bo Li & Jinyun Yuan & Jinlong Yang & Zhikun Wu & Rongchao Jin, 2015. "Structural isomerism in gold nanoparticles revealed by X-ray crystallography," Nature Communications, Nature, vol. 6(1), pages 1-7, December.
    2. Kyuju Kwak & Woojun Choi & Qing Tang & Minseok Kim & Yongjin Lee & De-en Jiang & Dongil Lee, 2017. "A molecule-like PtAu24(SC6H13)18 nanocluster as an electrocatalyst for hydrogen production," Nature Communications, Nature, vol. 8(1), pages 1-8, April.
    3. Qi Li & Dongming Zhou & Jinsong Chai & Woong Young So & Tong Cai & Mingxing Li & Linda A. Peteanu & Ou Chen & Mircea Cotlet & X. Wendy Gu & Haiming Zhu & Rongchao Jin, 2020. "Structural distortion and electron redistribution in dual-emitting gold nanoclusters," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
    4. Igor Dolamic & Stefan Knoppe & Amala Dass & Thomas Bürgi, 2012. "First enantioseparation and circular dichroism spectra of Au38 clusters protected by achiral ligands," Nature Communications, Nature, vol. 3(1), pages 1-6, January.
    5. Shubo Tian & Yi-Zhi Li & Man-Bo Li & Jinyun Yuan & Jinlong Yang & Zhikun Wu & Rongchao Jin, 2015. "Erratum: Structural isomerism in gold nanoparticles revealed by X-ray crystallography," Nature Communications, Nature, vol. 6(1), pages 1-1, December.
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