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<p>The synthesis of mesoporous metal–organic frameworks (meso-MOFs) is desirable as these materials can be used in various applications. However, owing to the imbalance in structural tension at the micro-scale (MOF crystallization) and the meso-scales (assembly of micelles with MOF subunits), the formation of single-crystal meso-MOFs is challenging. Here we report the preparation of uniform single-crystal meso-MOF nanoparticles with ordered mesopore channels in microporous frameworks with definite arrangements, through a cooperative assembly method co-mediated by strong and weak acids. These nanoparticles feature a truncated octahedron shape with variable size and well-defined two-dimensional hexagonally structured (<i>p</i>6<i>mm</i>) columnar mesopores. Notably, the match between the crystallization kinetics of MOFs and the assembly kinetics of micelles is critical for forming the single-crystal meso-MOFs. On the basis of this strategy, we have constructed a library of meso-MOFs with tunable large pore sizes, controllable mesophases, various morphologies and multivariate components.</p><p></p>

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Uniform single-crystal mesoporous metal–organic frameworks

  • 期刊论文

  • 发表日期：

    2025年1月6日

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  • Zirui Lv,
  • Runfeng Lin,
  • Yi Yang,
  • Kun Lan,
  • Chin-Te Hung,
  • Pengfei Zhang,
  • Jinxiu Wang,
  • Wanhai Zhou,
  • Zaiwang Zhao,
  • Zhongyao Wang,
  • Jiawen Zou,
  • Taoyang Wang,
  • Tiancong Zhao,
  • Yifei Xu,
  • Dongliang Chao,
  • Weimin Tan,
  • Bo Yan,
  • Qiaowei Li,
  • Dongyuan Zhao,
  • Xiaomin Li

摘要

The synthesis of mesoporous metal–organic frameworks (meso-MOFs) is desirable as these materials can be used in various applications. However, owing to the imbalance in structural tension at the micro-scale (MOF crystallization) and the meso-scales (assembly of micelles with MOF subunits), the formation of single-crystal meso-MOFs is challenging. Here we report the preparation of uniform single-crystal meso-MOF nanoparticles with ordered mesopore channels in microporous frameworks with definite arrangements, through a cooperative assembly method co-mediated by strong and weak acids. These nanoparticles feature a truncated octahedron shape with variable size and well-defined two-dimensional hexagonally structured (p6mm) columnar mesopores. Notably, the match between the crystallization kinetics of MOFs and the assembly kinetics of micelles is critical for forming the single-crystal meso-MOFs. On the basis of this strategy, we have constructed a library of meso-MOFs with tunable large pore sizes, controllable mesophases, various morphologies and multivariate components.