Ultrathin 2D Covalent Organic Framework Film Fabricated via Langmuir-Blodgett Method with a “Two-in-One” Type Monomer

doi:10.1007/s40242-022-1477-3

高等学校化学研究 ›› 2022, Vol. 38 ›› Issue (2): 440-445.doi: 10.1007/s40242-022-1477-3

Ultrathin 2D Covalent Organic Framework Film Fabricated via Langmuir-Blodgett Method with a “Two-in-One” Type Monomer

MENG Weijia¹, LI Yang¹, ZHAO Ziqiang¹, SONG Xiaoyu¹, LU Fanli¹, LU Fanli^1,2

1. Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University, Tianjin 300072, P. R. China;
2. State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China

收稿日期:2021-11-30 修回日期:2022-01-11 出版日期:2022-04-01 发布日期:2022-01-07
通讯作者: CHEN Long, LU Fanli, SONG Xiaoyu E-mail:longchen@jlu.edu.cn;fanlilu@tju.edu.cn;songxiaoyu@tju.edu.cn
基金资助:
This work was supported by the National Key Research and Development Program of China(No.2017YFA0207500) and the National Natural Science Foundation of China(No.51973153).

Ultrathin 2D Covalent Organic Framework Film Fabricated via Langmuir-Blodgett Method with a “Two-in-One” Type Monomer

MENG Weijia¹, LI Yang¹, ZHAO Ziqiang¹, SONG Xiaoyu¹, LU Fanli¹, LU Fanli^1,2

1. Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University, Tianjin 300072, P. R. China;
2. State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China

Received:2021-11-30 Revised:2022-01-11 Online:2022-04-01 Published:2022-01-07
Contact: CHEN Long, LU Fanli, SONG Xiaoyu E-mail:longchen@jlu.edu.cn;fanlilu@tju.edu.cn;songxiaoyu@tju.edu.cn
Supported by:
This work was supported by the National Key Research and Development Program of China(No.2017YFA0207500) and the National Natural Science Foundation of China(No.51973153).

摘要/Abstract

摘要： In recent years, covalent organic frameworks(COFs) are evolving as a novel kind of porous materials for catalysis and molecular separation, gas adsorption, etc. Various functional building blocks have been explored to tune the pore channels, including the pore size and structures. In this article, a new terphenyl(TP) based COF(TP-COF) was developed via a “two-in-one” strategy by using a symmetric A₂B₂monomer, i.e., 4,4''-diamino-2',5'-diformyl-1,1':4',1''-terphenyl(DADFTP). The pore size of TP-COF was only 0.99 nm by shortening the arm length of the DADFTP monomer. Freestanding, continuous and ultrathin COF films could be facilely prepared at the air-liquid interface through the modified Langmuir-Blodgett(LB) method. TP-COF films exhibited high rejection of over 90% for dyes removal.

关键词: “Two-in-one” strategy, Covalent organic framework film, Molecular sieving, Pore engineering

Abstract: In recent years, covalent organic frameworks(COFs) are evolving as a novel kind of porous materials for catalysis and molecular separation, gas adsorption, etc. Various functional building blocks have been explored to tune the pore channels, including the pore size and structures. In this article, a new terphenyl(TP) based COF(TP-COF) was developed via a “two-in-one” strategy by using a symmetric A₂B₂monomer, i.e., 4,4''-diamino-2',5'-diformyl-1,1':4',1''-terphenyl(DADFTP). The pore size of TP-COF was only 0.99 nm by shortening the arm length of the DADFTP monomer. Freestanding, continuous and ultrathin COF films could be facilely prepared at the air-liquid interface through the modified Langmuir-Blodgett(LB) method. TP-COF films exhibited high rejection of over 90% for dyes removal.

Key words: “Two-in-one” strategy, Covalent organic framework film, Molecular sieving, Pore engineering

MENG Weijia, LI Yang, ZHAO Ziqiang, SONG Xiaoyu, LU Fanli, CHEN Long. Ultrathin 2D Covalent Organic Framework Film Fabricated via Langmuir-Blodgett Method with a “Two-in-One” Type Monomer[J]. 高等学校化学研究, 2022, 38(2): 440-445.

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Ultrathin 2D Covalent Organic Framework Film Fabricated via Langmuir-Blodgett Method with a “Two-in-One” Type Monomer

Ultrathin 2D Covalent Organic Framework Film Fabricated via Langmuir-Blodgett Method with a “Two-in-One” Type Monomer

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