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Two-Dimensional Conjugated Covalent Organic Framework Films via Oxidative C–C Coupling Reactions at a Liquid–Liquid Interface
Organic Materials Pub Date : 2021-02-16 , DOI: 10.1055/s-0041-1723767
Shaofei Wu 1 , Hoa Phan 1 , Jing Li 1 , Haomin Xu 1 , Xing Li 1 , Dingguan Wang 1 , Tun Seng Herng 2 , Yi Han 1 , Andrew Wee 3 , Jun Ding 2 , Jiong Lu 1 , Jishan Wu 1, 4
Affiliation  

The construction of conjugated covalent organic frameworks (COFs) with strong C–C bond linkage remains a big challenge. Herein, we report a new strategy by using an oxidative C–C coupling reaction between electron-rich pyrrole rings at a liquid–liquid interface. Two threefold symmetric monomers containing three terminal pyrrole units were tested, and both gave two-dimensional conjugated COF films with good crystallinity. The bipyrrole units in the as-formed COFs are partially doped, which can be reduced to the neutral form by hydrazine and redoped by I2 vapor. The I2-doped films showed high conductivity (1.35 S/m). Meanwhile, the unpaired electrons exhibited moderate interlayer antiferromagnetic coupling.



中文翻译:

液-液界面处的氧化性C-C偶联反应二维共轭共价有机骨架膜

具有牢固的C–C键连接的共轭共价有机骨架(COF)的构建仍然是一个巨大的挑战。在这里,我们通过在液-液界面处的富电子吡咯环之间使用氧化性C-C偶联反应来报告一种新的策略。测试了包含三个末端吡咯单元的两个三重对称单体,均得到了具有良好结晶度的二维共轭COF膜。形成的COF中的双吡咯单元是部分掺杂的,可以通过肼还原为中性形式,并通过I 2蒸汽重掺杂。掺杂有I 2的膜显示出高电导率(1.35 S / m)。同时,未成对的电子表现出中等的层间反铁磁耦合。

更新日期:2021-02-17
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