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DOE OSTI · 1777958

Ester-Linked Crystalline Covalent Organic Frameworks

Zhao, Chenfei·Lyu, Hao·Ji, Zhe·Zhu, Chenhui·Yaghi, Omar M.
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Abstract

Ester-linked, crystalline, porous covalent organic frameworks (COFs) have been synthesized and structurally characterized. Transesterification reactions between ditopic 2-pyridinyl aromatic carboxylates and tri- or tetratopic phenols gave the corresponding ester-linked COFs. They crystallize as 2D structures in kgm (COF-119) and hcb (COF-120, 121, 122) topologies with surface areas of up to 2092 m 2 /g. Notably, crystalline COF-122 comprises edges spanning over 10 phenylene units, an aspect that had only been achieved in metal-organic frameworks. Finally, this work expands the scope of reticular chemistry to include, for the first time, crystalline ester-linked COFs related to common polyesters.

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRYaromatic compoundscovalent organic frameworksmaterialsorganic compoundsphysical and chemical processes

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Zhao, Chenfei, Lyu, Hao, Ji, Zhe, Zhu, Chenhui, Yaghi, Omar M.. 2020-08-04. Ester-Linked Crystalline Covalent Organic Frameworks. https://doi.org/10.1021/jacs.0c07015

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