堆积
共价键
单体
动态共价化学
动力控制
溶解度
烷基
共价有机骨架
化学
动能
材料科学
计算化学
聚合物
分子
有机化学
超分子化学
催化作用
物理
量子力学
作者
Honghan Long,Jie Zhang,Zhimin Jia,Ningning He,Yingdi Zou,Ziqian Han,Li Yang,Lijian Ma
标识
DOI:10.1021/acs.chemmater.3c01952
摘要
Based on dynamic covalent chemistry (DCC), the synthesis of covalent organic frameworks (COFs) is generally thought to be under thermodynamic control. However, the kinetically governed synthesis of COFs under unbalanced conditions has rarely been reported so far. For the first time, we found that the dedicated switch between thermodynamic and kinetic paths in the synthesis of two-dimensional (2D) COFs, implemented by modifying experimental parameters, would lead to products with disparate stacking profiles and macro-properties. In this study, we successfully synthesized several thermodynamic and kinetic COFs by modulating the solubility of monomers and sheet intermediates in the COF synthesis system through changing the length of alkyl side chains on monomers and the reaction temperature. Further, the transformation from kinetic to thermodynamic products was realized by a second solvothermal treatment under modified conditions. These results could provide an unprecedented approach to the structural and functional design of COFs.
科研通智能强力驱动
Strongly Powered by AbleSci AI