Assembling Guests as Cyclic Tetramers in a Porous Hydrogen-Bonded Organic Framework
Assembling Guests as Cyclic Tetramers in a Porous Hydrogen-Bonded Organic Framework
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DOI：
10.1021/acs.cgd.2c00217
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发表时间：
2022-04
期刊：
影响因子：
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通讯作者：
Mingshi Zhang;Jayanta Samanta;Chenfeng Ke
中科院分区：
文献类型：
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作者：
Mingshi Zhang;Jayanta Samanta;Chenfeng Ke
在大孔有机框架材料中安排多个客体依赖于对框架-衬底和衬底-衬底相互作用的基本理解。在这项工作中，我们制备了一系列苯胺、邻甲苯胺、间甲苯胺、对甲苯胺、甲苯和n-乙烯基-2-吡咯烷酮的氢键有机框架配合物（HOF-1·客体）。单晶结构分析表明，这些客体在HOF-1中形成了类似的环四聚体，这是由于HOF-1-客体的氢键和N-H··π相互作用。客体之间的弱C-H··π或C-H··O相互作用进一步稳定了这些环四聚体。框架-底物的强相互作用使得苯胺和n -乙烯基-2-吡咯烷酮在HOF-1的相同空隙中被吸收，HOF-1中的残酸在空隙中催化了烷基化反应。
Arranging multiple guests in large-pore organic framework materials relies on a fundamental understanding of the framework–substrate and substrate–substrate interactions. In this work, we prepared a series of hydrogen-bonded organic framework complexes (HOF-1·guests) with aniline,o-toluidine,m-toluidine,p-toluidine, toluene, andN-vinyl-2-pyrrolidone. Single-crystal structural analyses revealed that these guests formed similar cyclic tetramers in HOF-1 due to the strong HOF-1-guest hydrogen bonding and N-H···π interactions. Weak C-H···π or C-H···O interactions between guests were found to further stabilize these cyclic tetramers. The strong framework–substrate interaction enabled the uptake of aniline andN-vinyl-2-pyrrolidone in the same voids of HOF-1, and the residual acid in HOF-1 catalyzed an alkylation reaction within the voids.