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  • Perspective
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Tessellated multiporous two-dimensional covalent organic frameworks

Nature Reviews Chemistry volume 1, Article number: 0056 (2017) Cite this article

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Abstract

In the past decade, covalent organic frameworks (COFs) have emerged as a new class of highly ordered crystalline organic porous polymers. They have attracted tremendous research interest because of their unique structures and potential applications in gas storage and separation, energy storage, catalysis and optoelectronic materials development. Although the skeletons and pore structures of COFs are customizable through judicious selection of chemical building blocks, COF materials have been mainly limited to uniform pore structures with homogeneous pore environments. Two-dimensional COFs with complex multipore structures are largely unexplored, perhaps owing to the challenges that are inherent in designing selective syntheses. Simple tessellation has been remarkably successful in the preparation of regular 2D COFs, but building multiporous systems requires the aid of mathematical design. In this Perspective, we discuss four different approaches to tessellated 2D COFS with a focus on the mathematical rules for their application. A comparison of these strategies should provide guidance to those designing new applications of COF materials.

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Figure 1: Regular and semi-regular tessellations.
Figure 2: The desymmetrized-vertex design strategy.
Figure 3: The orthogonal reaction strategy.
Figure 4: The angle-specific vertex design strategy.
Figure 5: Shape-persistent-patch design.
Figure 6: Framework construction using hexatopic building blocks.
Figure 7: The mixed-component design strategy.
Figure 8: Mixed-component design using pre-linked vertices.

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Acknowledgements

The authors thank the University of Colorado Boulder and the K. C. Wong Education Foundation for funding support.

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  1. Yiming Hu and Wei Zhang are at the Department of Chemistry and Biochemistry, Yinghua Jin, University of Colorado at Boulder, Colorado 80309, USA.,

    Yinghua Jin, Yiming Hu & Wei Zhang

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Jin, Y., Hu, Y. & Zhang, W. Tessellated multiporous two-dimensional covalent organic frameworks. Nat Rev Chem 1, 0056 (2017). https://doi.org/10.1038/s41570-017-0056

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