文献类型：期刊文献

英文题名：Base-mediated exfoliation of quinoline-linked covalent organic frameworks for heavy metal ion adsorption

作者：Xu, Yongjie[1,2];Liu, Yang[3];Wang, Xue[1];Yang, Haofan[1];Wang, Peiying[1];Zhang, Weiwei[4,5];Ward, John W.[1];Cooper, Andrew I.[1]

机构：[1]Univ Liverpool, Leverhulme Res Ctr Funct Mat Design, Dept Chem & Mat Innovat Factory, Liverpool L69 7ZD, England;[2]Ningbo Inst Digital Twin, Eastern Inst Technol, Ningbo 315200, Zhejiang, Peoples R China;[3]Sichuan Univ, Coll Polymer Sci & Engn, State Key Lab Polymer Mat Engn, Chengdu 610065, Peoples R China;[4]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[5]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Joint Int Res Lab Precis Chem & Mol Engn, Inst Fine Chem,Sch Chem & Mol Engn,Frontiers Sci C, Shanghai 200237, Peoples R China

年份：2025

卷号：13

期号：33

起止页码：27524

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：;EI(收录号：20253419040389);WOS:【SCI-EXPANDED(收录号:WOS:001537051000001)】；

基金：This work was financially supported by the Leverhulme Trust via the Leverhulme Research Centre for Functional Materials Design. The authors thank Dr Marco Zanella, Dr Haiyan Duan, and Dr Kai Wu for valuable input on the AFM experiments and Dr Kewei Wang for the useful discussions. Weiwei Zhang acknowledges support from the Science and Technology Commission of Shanghai Municipality (24160711900).

语种：英文

外文关键词：Adsorption - Crystallinity - Exfoliation (materials science) - Metal ions - Organometallics

摘要：Multicomponent reactions that combine sequential reversible and irreversible bond forming reactions are efficient methods for the synthesis of robust covalent organic frameworks (COFs) with high crystallinity and stability. Here, we report a mild synthetic method for the synthesis of quinoline-linked covalent organic frameworks (Qu-COFs) using a multicomponent Doebner reaction. These Qu-COFs have high stability, crystallinity, porosity, and good wettability. The unique quinoline-4-carboxylic acid linkage resulting from the Doebner reaction enables ion insertion and exfoliation of bulk Qu-COF under mild conditions to give 2D nanosheets (Qu-CONs). Furthermore, the exfoliated Qu-CONs exhibit ultrafast cadmium ion uptake. Our work provides a mild and efficient method for synthesizing stable, functionally diverse 2D nanosheets and further expands the potential applications of COFs.