Angewandte Chemie International Edition·· 4 小时前精选AI 评分62
PEGDA 浸润调控 ZIF-8 动态孔径，实现 CO2/N2 分子筛分
Coupling Ligand Tuning With Polymer‐Induced Aperture Regulation for Molecular Sieving in Flexible MOFs
AI 导读
研究者在混合基质膜成型过程中用聚乙二醇二丙烯酸酯（PEGDA）部分渗入 ZIF-8 空腔，抑制骨架动态扩孔，使含 6 mol% 2-氨基苯并咪唑的 ZIF-8-NH2 的 CO2/N2 扩散选择性从无聚合物时的 0.58 提高到聚合物环境中的 26.6。
推荐理由
通过聚合物浸润抑制 ZIF-8 骨架动态扩孔，把原本无选择性的 CO2/N2 吸附转变为尺寸筛分，并给出膜性能数据。
创新点
用聚合物浸润在膜成型中原位抑制柔性 MOF 的骨架动态扩孔，把标称孔径合适但实际无选择性的 ZIF-8 转变为 CO2/N2 分子筛，而非依赖配体修饰本身。
来源：Angewandte Chemie International Edition · doi.org
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