Topology‐Tuned Structural Flexibility Toward Customized Piezofluorochromism in Stable Zirconium MOFs

作者：Cha Li, Zirun Chen, Chiyuan Sun, Jinli Zhang, Pengxiang Dong, Feifan Lang, Ke Yang, Kai Wang, Jiandong Pang, Xian‐He Bu · 发表于：Angewandte Chemie International Edition · 年份：2025 · DOI：10.1002/anie.202516124 · 被引用次数：8 · 研究领域：Metal-Organic Frameworks: Synthesis and Applications、Luminescence and Fluorescent Materials、Nanoplatforms for cancer theranostics

Albeit serving important roles in high-techs, the rapid development of crystalline pressure-responsive materials still heavily relied on the de novo synthesis. Regarding pressure-responsive metal-organic frameworks (MOFs), their fascinating designability on the metal/ligand component has been extensively utilized, but yet for their network or topology tunability. Derived from the reticular chemistry, we, herein, present a distinctive exploration toward altered piezofluorochromic behaviors of highly-stable MOFs under GPa-level, of which is highly topology-focused. Specifically, each of the three selected organic ligand have yielded its corresponding zirconium-MOFs under csq- and scu-topology, whom all possessed well-behaved, reversible pressure-altered photoluminescence (PL). Comprehensive experimental and theoretical investigations revealed that the intrinsic network flexibility of scu-topology rendered the MOFs with larger PL response sensitivity, while the relatively rigid csq-topology could induce the rarely-reported pressure-induced emission enhancement (PIEE). This observed topology-dependent piezofluorochromism regulation proactively establishes a novel structure-property relationship in crystalline piezofluorochromic materials, while also spearheads a new horizon for customized smart pressure sensors and optoelectronic devices.