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<p>The facile synthesis of single-crystal hydrogen-bonded organic frameworks (HOFs) on a gram scale remains a significant challenge but is crucial for practical applications. Herein, we report a novel strategy to prepare two three-dimensional (3D) single-crystal HOFs at ambient temperature and pressure with gram-scale products. The imine-linked oligomers were synthesized using ionic liquids as catalysts, which self-assembled <i>in situ</i> to form large single crystals. The optimal material, <b>H1</b>, exhibited iodine uptake capacities of 6.02 and 4.44 g g<sup>−1</sup> from vapor and aqueous solutions, respectively, ranking among the highest reported HOFs. For the first time, the iodine-adsorbed <b>H1</b> was used as an iodine source for synthesizing β-iodoethers, achieving excellent yields comparable to those obtained using iodine as the reactant. This study not only presents a simple method for the scalable synthesis of single-crystal HOFs but also explores a potential application of iodine-adsorbed materials in organic synthesis.</p>

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Facile and gram-scale synthesis of single-crystal hydrogen-bonded organic frameworks as iodine adsorbents for synthesis of β-iodoethers

  • 期刊论文

  • 发表日期：

    2025年2月6日

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  • Zhiye Zheng,
  • Qiuyuan Lin,
  • Shunfeng Peng,
  • Yuxuan Zhang,
  • Shuting Xu,
  • Hui Zhang,
  • Hongyu Wang

摘要

The facile synthesis of single-crystal hydrogen-bonded organic frameworks (HOFs) on a gram scale remains a significant challenge but is crucial for practical applications. Herein, we report a novel strategy to prepare two three-dimensional (3D) single-crystal HOFs at ambient temperature and pressure with gram-scale products. The imine-linked oligomers were synthesized using ionic liquids as catalysts, which self-assembled in situ to form large single crystals. The optimal material, H1, exhibited iodine uptake capacities of 6.02 and 4.44 g g−1 from vapor and aqueous solutions, respectively, ranking among the highest reported HOFs. For the first time, the iodine-adsorbed H1 was used as an iodine source for synthesizing β-iodoethers, achieving excellent yields comparable to those obtained using iodine as the reactant. This study not only presents a simple method for the scalable synthesis of single-crystal HOFs but also explores a potential application of iodine-adsorbed materials in organic synthesis.