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A novel crystalline azine-linked three-dimensional covalent organic framework for CO2 capture and conversion.

Pengxin GuanJikuan QiuYuling ZhaoHuiyong WangZhiyong LiYunlei ShiHuiyong Wang
Published in: Chemical communications (Cambridge, England) (2019)
The targeted synthesis of three-dimensional covalent organic frameworks (3D COFs) is a great challenge, especially those synthesized by using a new kind of organic linkage. Herein, for the first time, a novel 3D azine-linked COF (3D-HNU5) has been synthesized and characterized. It is shown that the obtained 3D COF has a 2-fold interpenetrated diamond topology, and shows good chemical/thermal stability and a narrow pore size distribution, which exhibits excellent performance in the selective uptake of CO2 over N2. Moreover, the 3D-HNU5 is found to be an efficient catalyst for the cycloaddition of propargylic alcohols with CO2 into carbonates with excellent catalytic activity under mild conditions.
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