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A Noncovalent π-Stacked Porous Organic Molecular Framework for Selective Separation of Aromatics and Cyclic Aliphatics.

Cheng ChenHaiyan GuanHengbo LiYunzhe ZhouYougui HuangWei WeiMaochun HongMingyan Wu
Published in: Angewandte Chemie (International ed. in English) (2022)
Selective separation using porous adsorbents is an energy-efficient alternative to traditional separation techniques. Stacked porous organic molecular frameworks (POMFs) capable of noncovalent π⋅⋅⋅π interactions are emerging as a new kind of adsorbents that facilitate green separation. Here we report a robust porous molecular crystal (TAPM-1), which is stabilized by multiple intermolecular π⋅⋅⋅π interactions. With its long-range π-stacking, TAPM-1 has excellent hydrophobicity, thermostability, recyclability, and high selectivity for aromatics over the corresponding cyclic aliphatics. This enables TAPM-1 to serve as the stationary phase in the high-resolution gas chromatographic separation of benzene and cyclohexane or toluene and methylcyclohexane.
Keyphrases
  • liquid chromatography
  • high resolution
  • mass spectrometry
  • metal organic framework
  • tandem mass spectrometry
  • highly efficient
  • single molecule
  • water soluble
  • room temperature