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Pressure treatment enables white-light emission in Zn-IPA MOF via asymmetrical metal-ligand chelate coordination

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  • Qing Yang

    (Jilin University)

  • Weibin Wang

    (Jilin University)

  • Yunfeng Yang

    (Jilin University)

  • Pengyuan Li

    (Jilin University)

  • Xinyi Yang

    (Jilin University)

  • Fuquan Bai

    (Jilin University)

  • Bo Zou

    (Jilin University)

Abstract

Metal-organic frameworks that feature hybrid fluorescence and phosphorescence offer unique advantages in white-emitting communities based on their multiple emission centers and high exciton utilization. However, it poses a substantial challenge to realize superior white-light emission in single-component metal-organic frameworks without encapsulating varying chromophores or integrating multiple phosphor subunits. Here, we achieve a high-performance white-light emission with photoluminescence quantum yield of 81.3% via boosting triplet excitons distribution through pressure treatment in single-component Zn-IPA metal-organic frameworks. A novel metal-ligand asymmetrical chelate coordination is successfully integrated into the Zn-IPA after a high-pressure treatment over ~20.0 GPa. This modification unexpectedly endows the targeted sample with a new emergent electronic state to narrow the singlet-triplet energy gap, which effectively accelerates the spin-flipping process for boosted triplet excitons population. Time delay phosphor-converted light-emitting diodes are fabricated with long emission time up to ~7 s after switching off, providing significant advancements for white-light and time-delay lighting applications.

Suggested Citation

  • Qing Yang & Weibin Wang & Yunfeng Yang & Pengyuan Li & Xinyi Yang & Fuquan Bai & Bo Zou, 2025. "Pressure treatment enables white-light emission in Zn-IPA MOF via asymmetrical metal-ligand chelate coordination," Nature Communications, Nature, vol. 16(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:16:y:2025:i:1:d:10.1038_s41467-025-55978-9
    DOI: 10.1038/s41467-025-55978-9
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