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Carbene-stabilized enantiopure heterometallic clusters featuring EQE of 20.8% in circularly-polarized OLED

Author

Listed:
  • Xiao-Hong Ma

    (Zhengzhou University)

  • Jing Li

    (Zhengzhou University)

  • Peng Luo

    (College of Chemistry and Chemical Engineering Henan Polytechnic University)

  • Jia-Hua Hu

    (Zhengzhou University)

  • Zhen Han

    (Zhengzhou University)

  • Xi-Yan Dong

    (Zhengzhou University
    College of Chemistry and Chemical Engineering Henan Polytechnic University)

  • Guohua Xie

    (Wuhan University)

  • Shuang-Quan Zang

    (Zhengzhou University)

Abstract

Bright and efficient chiral coinage metal clusters show promise for use in emerging circularly polarized light-emitting materials and diodes. To date, highly efficient circularly polarized organic light-emitting diodes (CP-OLEDs) with enantiopure metal clusters have not been reported. Herein, through rational design of a multidentate chiral N-heterocyclic carbene (NHC) ligand and a modular building strategy, we synthesize a series of enantiopure Au(I)-Cu(I) clusters with exceptional stability. Modulation of the ligands stabilize the chiral excited states of clusters to allow thermally activated delayed fluorescence, resulting in the highest orange-red photoluminescence quantum yields over 93.0% in the solid state, which is accompanied by circularly polarized luminescence. Based on the solution process, a prototypical orange-red CP-OLED with a considerably high external quantum efficiency of 20.8% is prepared. These results demonstrate the extensive designability of chiral NHC ligands to stabilize polymetallic clusters for high performance in chiroptical applications.

Suggested Citation

  • Xiao-Hong Ma & Jing Li & Peng Luo & Jia-Hua Hu & Zhen Han & Xi-Yan Dong & Guohua Xie & Shuang-Quan Zang, 2023. "Carbene-stabilized enantiopure heterometallic clusters featuring EQE of 20.8% in circularly-polarized OLED," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-39802-w
    DOI: 10.1038/s41467-023-39802-w
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    1. Li-Zhe Feng & Jing-Jing Wang & Tao Ma & Yi-Chen Yin & Kuang-Hui Song & Zi-Du Li & Man-Man Zhou & Shan Jin & Taotao Zhuang & Feng-Jia Fan & Man-Zhou Zhu & Hong-Bin Yao, 2022. "Biomimetic non-classical crystallization drives hierarchical structuring of efficient circularly polarized phosphors," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    2. Zhen Lei & Mizuki Endo & Hitoshi Ube & Takafumi Shiraogawa & Pei Zhao & Koichi Nagata & Xiao-Li Pei & Tomoya Eguchi & Toshiaki Kamachi & Masahiro Ehara & Takeaki Ozawa & Mitsuhiko Shionoya, 2022. "N-Heterocyclic carbene-based C-centered Au(I)-Ag(I) clusters with intense phosphorescence and organelle-selective translocation in cells," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    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.
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    Cited by:

    1. 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.

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