Shan Zhen, Wu Xiaowei, Xu Bingqing, Hong You-Lee, Wu Miaomiao, Wang Yuxiang, Nishiyama Yusuke, Zhu Junwu, Horike Satoshi, Kitagawa Susumu, Zhang Gen
Key Laboratory for Soft Chemistry and Functional Materials of Ministry of Education, School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing, Jiangsu 210094, China.
RIKEN-JEOL Collaboration Center and RIKEN SPring-8 Center, Tsurumi, Yokohama, Kanagawa 230-0045, Japan.
J Am Chem Soc. 2020 Dec 23;142(51):21279-21284. doi: 10.1021/jacs.0c11073. Epub 2020 Dec 9.
We propose a dynamic covalent chemistry (DCC)-induced linker exchange strategy for the structural transformation between covalent organic frameworks (COFs) and cages for the first time. Studies have shown that the COF-to-cage and cage-to-COF transformations were realized by using borate bonds and imine bonds, respectively, as linkages. Self-sorting experiments suggested that borate cages and imine COFs are thermodynamic minimum compounds. This research builds a bridge between discrete and polymeric organic scaffolds and broadens the knowledge of chemistry and materials for porous materials science.
我们首次提出了一种由动态共价化学（DCC）诱导的连接体交换策略，用于共价有机框架（COF）与笼状结构之间的结构转变。研究表明，分别以硼酸酯键和亚胺键作为连接键，实现了COF到笼状结构以及笼状结构到COF的转变。自分类实验表明，硼酸酯笼状结构和亚胺COF是热力学最低化合物。这项研究在离散和聚合有机支架之间架起了一座桥梁，拓宽了多孔材料科学的化学和材料知识。
