超分子化学
支柱
金属有机骨架
材料科学
纳米技术
分子
吡啶
分子识别
晶体结构
组合化学
结晶学
化学
有机化学
结构工程
吸附
工程类
作者
Yitao Wu,Meiqi Tang,Zeju Wang,Le Shi,Zhangyi Xiong,Zhijie Chen,Jonathan L. Sessler,Feihe Huang
标识
DOI:10.1038/s41467-023-40594-2
摘要
Crystalline frameworks containing incorporated flexible macrocycle units can afford new opportunities in molecular recognition and selective separation. However, such functionalized frameworks are difficult to prepare and challenging to characterize due to the flexible nature of macrocycles, which limits the development of macrocycle-based crystalline frameworks. Herein, we report the design and synthesis of a set of metal-organic frameworks (MOFs) containing pillar[5]arene units. The pillar[5]arene units were uniformly embedded in the periodic frameworks. Single crystal X-ray diffraction analysis revealed an interpenetrated network that appears to hinder the rotation of the pillar[5]arene repeating units in the frameworks, and it therefore resulted in the successful determination of the precise pillar[5]arene host structure in a MOF crystal. These MOFs can recognize paraquat and 1,2,4,5-tetracyanobenzene in solution and selectively remove trace pyridine from toluene with relative ease. The work presented here represents a critical step towards the synthesis of macrocycle-incorporated crystalline frameworks with well-defined structures and functional utility.
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