Chen Cheng, Guan Haiyan, Li Hengbo, Zhou Yunzhe, Huang Yougui, Wei Wei, Hong Maochun, Wu Mingyan
State Key Lab of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, 350002, China.
Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China, Fuzhou, 350108, China.
Angew Chem Int Ed Engl. 2022 Jun 13;61(24):e202201646. doi: 10.1002/anie.202201646. Epub 2022 Apr 12.
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.
使用多孔吸附剂进行选择性分离是一种比传统分离技术更节能的替代方法。能够进行非共价π⋅⋅⋅π相互作用的堆叠式多孔有机分子框架（POMF）正在成为一种有助于绿色分离的新型吸附剂。在此，我们报道了一种坚固的多孔分子晶体（TAPM-1），它通过多种分子间π⋅⋅⋅π相互作用得以稳定。凭借其长程π堆积，TAPM-1具有出色的疏水性、热稳定性、可回收性，并且对芳烃相对于相应的环脂族化合物具有高选择性。这使得TAPM-1能够在苯和环己烷或甲苯和甲基环己烷的高分辨率气相色谱分离中用作固定相。
