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Controlled Sequential Doping of Metal Nanocluster.

Yue Zhou1,2, Wanmiao Gu1,3, Runguo Wang1,2

  • 1Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanotechnology, CAS Center for Excellence in Nanoscience, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, P. R. China.

Nano Letters
|January 22, 2024
PubMed
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Researchers developed a novel multistep synthesis for sequential single-to-multiple metal atom doping in metal nanoclusters (NCs). This breakthrough enables controlled doping and reveals property evolution in doped NCs.

Area of Science:

  • Nanomaterials Science
  • Inorganic Chemistry
  • Catalysis

Background:

  • Atomically precise doping of metal nanoclusters (NCs) is crucial for understanding structure-property relationships.
  • While single and multiple doping are established, sequential doping from single to multiple atoms remains a significant challenge.

Purpose of the Study:

  • To develop a novel method for controlled sequential single-to-multiple metal atom doping in metal nanoclusters.
  • To synthesize and characterize novel doped metal nanoclusters.
  • To investigate the evolution of structural and property changes induced by sequential doping.

Main Methods:

  • A novel multistep synthesis strategy was developed by introducing a second ligand.
  • Three doped metal nanoclusters, Au25Cd1(p-MBT)17(PPh3)2, Au18Cd2(p-MBT)14(PPh3)2, and [Au19Cd3(p-MBT)18]-, were synthesized.
Keywords:
Au18Cd2(p-MBT)14(PPh3)2Au25Cd1(p-MBT)17(PPh3)2evolutionmetal nanoclusterssequential doping

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  • Characterization was performed using mass spectrometry and single-crystal X-ray crystallography.

    • Main Results:

    • Controlled sequential single-to-multiple metal atom doping was achieved for the first time.
    • Two novel doped metal nanoclusters were precisely characterized.
    • Sequential doping led to observable evolutions in atomic structure, crystallographic structure, optical properties, and catalytic activity.

    Conclusions:

    • The developed method enables precise control over sequential doping in metal nanoclusters.
    • This work provides fundamental insights into the impact of sequential doping on NC properties.
    • The findings open new avenues for designing advanced functional nanomaterials.