An ionic vinylene-linked three-dimensional covalent organic framework for selective and efficient trapping of ReO4− or 99TcO4−

Cheng-Rong Zhang, Wei-Rong Cui, Shun-Mo Yi, Cheng-Peng Niu, Ru-Ping Liang, Jia-Xin Qi, Xiao-Juan Chen, Wei Jiang, Xin Liu, Qiu-Xia Luo and Jian-Ding Qiu ()
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Cheng-Rong Zhang: Nanchang University
Wei-Rong Cui: Nanchang University
Shun-Mo Yi: Nanchang University
Cheng-Peng Niu: Nanchang University
Ru-Ping Liang: Nanchang University
Jia-Xin Qi: Nanchang University
Xiao-Juan Chen: Nanchang University
Wei Jiang: Nanchang University
Xin Liu: Nanchang University
Qiu-Xia Luo: Nanchang University
Jian-Ding Qiu: Nanchang University

Nature Communications, 2022, vol. 13, issue 1, 1-8

Abstract: Abstract The synthesis of ionic olefin linked three-dimensional covalent organic frameworks (3D COFs) is greatly challenging given the hardness of the formation of stable carbon-carbon double bonds (–C = C–). Herein, we report a general strategy for designing porous positively charged sp2 carbon-linked 3D COFs through the Aldol condensation promoted by quaternization. The obtained 3D COFs, namely TFPM-PZI and TAPM-PZI, showed impressive chemical stability. Furthermore, the positively charged frameworks with regular porosity endow 3D ionic COFs with selective capture radioactive ReO4−/TcO4− and great removal efficiency in simulated Hanford waste. This research not only broadens the category of 3D COFs but also promotes the application of COFs as efficient functional materials.

Date: 2022
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DOI: 10.1038/s41467-022-35435-7

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