共價有機框架與分立有機籠的動態轉化
作者:
小柯機器人發布時間:2020/12/11 13:58:32
南京理工大學張根課題組與日本京都大學Kitagawa課題組合作,實現了共價有機框架(COF)與有機籠之間的動態轉化。 該研究於2020年12月9日發表於國際一流學術期刊《美國化學會志》上。
在該研究中,團隊提出了一種由動態共價化學引發的連接子交換策略,首次實現了共價有機框架和有機籠之間的結構轉化。研究表明,COF-有機籠和有機籠-COF轉化是分別通過作為連接分子的硼酯和亞胺鍵發生的。自分類實驗表明,硼酯有機籠和亞胺COF都是處於熱力學極小值上的化合物。
研究人員表示,這項工作為分立和聚合有機模板間構建了一座橋梁,也拓展了人們對化學和多孔有機材料科學的知識。
附:英文原文
Title: Dynamic Transformation between Covalent Organic Frameworks and Discrete Organic Cages
Author: Zhen Shan, Xiaowei Wu, Bingqing Xu, You-lee Hong, Miaomiao Wu, Yuxiang Wang, Yusuke Nishiyama, Junwu Zhu, Satoshi Horike, Susumu Kitagawa, Gen Zhang
Issue&Volume: December 9, 2020
Abstract: 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.
DOI: 10.1021/jacs.0c11073
Source: https://pubs.acs.org/doi/10.1021/jacs.0c11073