Rational design of crystalline two-dimensional frameworks with highly complicated topological structures

Rong-Ran Liang, Shun-Qi Xu, Lei Zhang, Ru-Han A, Pohua Chen, Fu-Zhi Cui, Qiao-Yan Qi, Junliang Sun () and Xin Zhao ()
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Rong-Ran Liang: University of Chinese Academy of Sciences, Chinese Academy of Sciences
Shun-Qi Xu: University of Chinese Academy of Sciences, Chinese Academy of Sciences
Lei Zhang: Peking University
Ru-Han A: University of Chinese Academy of Sciences, Chinese Academy of Sciences
Pohua Chen: Peking University
Fu-Zhi Cui: University of Chinese Academy of Sciences, Chinese Academy of Sciences
Qiao-Yan Qi: University of Chinese Academy of Sciences, Chinese Academy of Sciences
Junliang Sun: Peking University
Xin Zhao: University of Chinese Academy of Sciences, Chinese Academy of Sciences

Nature Communications, 2019, vol. 10, issue 1, 1-9

Abstract: Abstract Constructing two-dimensional (2D) polymers with complex tessellation patterns via synthetic chemistry makes a significant contribution not only to the understanding of the emergence of complex hierarchical systems in living organisms, but also to the fabrication of advanced hierarchical materials. However, to achieve such tasks is a great challenge. In this communication we report a facile and general approach to tessellate 2D covalent organic frameworks (COFs) by three or four geometric shapes/sizes, which affords 2D COFs bearing three or four different kinds of pores and increases structural complexity in tessellations of 2D polymers to a much higher level. The complex tessellation patterns of the COFs are elucidated by powder X-ray diffraction studies, theoretical simulations and high-resolution TEM.

Date: 2019
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DOI: 10.1038/s41467-019-12596-6

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