Universal synthesis of metallophthalocyanine covalent organic frameworks as ultra-sensitive multifaceted electrochemical sensor  

作　　者：Qi Liu Qiqi Sun Yuming Zhang Hao Li Wenmiao Chen Yuexing Zhang Sirong Yu Yanli Chen Jianzhuang Jiang 

机构地区：[1]School of Materials Science and Engineering,China University of Petroleum(East China),Qingdao,266580,China [2]Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials,School of Chemistry and Biological Engineering,University of Science and Technology Beijing,Beijing,100083,China [3]College of Chemistry and Chemical Engineering,Dezhou University,Dezhou,253023,China

出　　处：《Science China Chemistry》2024年第6期2092-2101,共10页中国科学（化学英文版）

基　　金：supported by the Key Program of National Natural Science Foundation of China(22133006);the National Natural Science Foundation of China(21771192,22301314);the Natural Science Foundation of Shandong Province(ZR2017ZB0315);the Program for Taishan Scholar of Shandong Province(ts201712019)。

摘　　要：The universal synthesis of highly stable covalent organic frameworks(COFs)for ultra-sensitive and multi-component electrochemical detection in different scenarios remains a great challenge.Herein,a series of metallophthalocyanine-based twodimensional(2D)dioxin(DXI)-linked metalophthalocyanine(MPc)-n DXI-COFs(M=Ni,Zn;n=1,2)are afforded in high yield(80%-96%)by a facile trace-quinoline assisted one-pot condensation of tetracarbonitrile precursors.Powder X-ray diffraction and electron microscopy investigations disclose their lamellar texture 2D network with AA stacking mode.Experiments and calculation results elucidate that the 2DXI-linked MPc-2DXI-COFs provide the stronger built-in electronic field and more electrostatic/hydrogen bonding adsorption sites than DXI-linked MPc-DXI-COFs,and the lower electrode reaction Gibbs free energy and stronger adsorption of analytes at Ni Pc than Zn Pc unit,which grants Ni Pc-2DXI-COF excellent sensing properties for various analytes including neurotransmitters,organic pollutants,and heavy metal ions,with high sensitivity and low detection limit of 0.53 to 25.66 nM.Especially in binary and ternary systems and even in real-world conditions,simultaneous multi-component detection could be achieved.

关 键 词：covalent organic framework METALLOPHTHALOCYANINE 2D materials electrochemical sensors multi-component detection 

分 类 号：O657.1[理学—分析化学] TB383.4[理学—化学]