Zhao Kai, He Ying, Shan Chuan, Wojtas Lukasz, Ren Junyu, Yan Yu, Shi Hanzhong, Wang Haonan, Song Zhiguang, Shi Xiaodong
State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun, Jilin, 130012, P. R. China.
Department of Chemistry, University of South Florida, Tampa, FL 33620, USA.
Chemistry. 2021 Jul 26;27(42):10833-10838. doi: 10.1002/chem.202101173. Epub 2021 Jun 22.
A helical metal-organic framework was prepared by using a conformationally rigid tetratopic benzoic acid ligand with binding units pointing toward each other (concave ligand). To avoid the obvious intramolecular interactions between binding units, matching spacing groups were applied to introduce atropic repulsion, thereby allowing the formation of extended frameworks for the first time. With this new ligand design, a helical-shaped MOF with significantly improved air and moisture stability was successfully prepared, thus providing a new strategy for ligand design toward porous material constructions.
通过使用一种构象刚性的四齿苯甲酸配体（其结合单元相互指向，即凹形配体）制备了一种螺旋金属有机框架。为了避免结合单元之间明显的分子内相互作用，应用了匹配的间隔基团以引入位阻排斥，从而首次实现了扩展框架的形成。通过这种新的配体设计，成功制备了一种空气和水分稳定性显著提高的螺旋形金属有机框架，从而为多孔材料结构的配体设计提供了一种新策略。
