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Lighting Up Yb-MOF Across Visible and NIR Regions Through High-Pressure Engineering
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DOI：10.1002/lpor.71743.png)
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Abstract
En 中文
Lanthanide metal-organic frameworks (Ln-MOFs) provide a robust platform for developing multifunctional materials with efficient dual emissions from both organic and Ln3+ centers. However, the structural parameters that govern their intrinsic emission properties, as well as the mechanisms underlying energy transfer processes, remain poorly understood. Herein, high pressure is employed to dynamically “light up” a representative Yb-MOF, Yb(BTC)(H2O) (H3BTC: tricarboxylate 1,3,5-benzenetricarboxylic acid), leading to a significant emission enhancement across visible and near-infrared regions. Pressure-induced lattice contraction, coupled with reduced molecular vibrations and a distorted coordination environment, suppresses nonradiative losses in the organic linkers while simultaneously promoting ligand-to-metal energy transfer. Notably, the structural variations are retained even after decompression, resulting in a persistent, intense white-light emission upon pressure release. This work not only elucidates the key structural factors that govern emissions in Ln-MOFs but also demonstrates pressure engineering as a new strategy to optimize and stabilize their luminescent properties.
Keywords:
antenna effect
diamond anvil cell
irreversible transition
porous material
pressure-induced emission enhancement
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