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Dual-quartet phosphorescent emission in the open-shell M1Ag13 (M = Pt, Pd) nanoclusters

Author

Listed:
  • Cao Fang

    (Anhui University
    Anhui University)

  • Chang Xu

    (Anhui University)

  • Wei Zhang

    (University of Science and Technology of China)

  • Meng Zhou

    (University of Science and Technology of China)

  • Dong Tan

    (Anhui University
    Anhui University)

  • Lixia Qian

    (Anhui University)

  • Daqiao Hu

    (Anhui University
    Anhui University)

  • Shan Jin

    (Anhui University
    Anhui University)

  • Manzhou Zhu

    (Anhui University
    Anhui University)

Abstract

Dual emission (DE) in nanoclusters (NCs) is considerably significant in the research and application of ratiometric sensing, bioimaging, and novel optoelectronic devices. Exploring the DE mechanism in open-shell NCs with doublet or quartet emissions remains challenging because synthesizing open-shell NCs is difficult due to their inherent instability. Here, we synthesize two dual-emissive M1Ag13(PFBT)6(TPP)7 (M = Pt, Pd; PFBT = pentafluorobenzenethiol; TPP = triphenylphosphine) NCs with a 7-electron open-shell configuration to reveal the DE mechanism. Both NCs comprise a crown-like M1Ag11 kernel with Pt or Pd in the center surrounded by five PPh3 ligands and two Ag(SR)3(PPh3) motifs. The combined experimental and theoretical studies revealed the origin of DE in Pt1Ag13 and Pd1Ag13. Specifically, the high-energy visible emission and the low-energy near-infrared emission arise from two distinct quartet excited states: the core-shell charge transfer and core-based states, respectively. Moreover, PFBT ligands are found to play an important role in the existence of DE, as its low-lying π* levels result in energetically accessible core-shell transitions. This novel report on the dual-quartet phosphorescent emission in NCs with an open-shell electronic configuration advances insights into the origin of dual-emissive NCs and promotes their potential application in magnetoluminescence and novel optoelectronic devices.

Suggested Citation

  • Cao Fang & Chang Xu & Wei Zhang & Meng Zhou & Dong Tan & Lixia Qian & Daqiao Hu & Shan Jin & Manzhou Zhu, 2024. "Dual-quartet phosphorescent emission in the open-shell M1Ag13 (M = Pt, Pd) nanoclusters," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:15:y:2024:i:1:d:10.1038_s41467-024-50289-x
    DOI: 10.1038/s41467-024-50289-x
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