Designed synthesis of large-pore crystalline polyimide covalent organic frameworks

Qianrong Fang, Zhongbin Zhuang, Shuang Gu, Robert B. Kaspar, Jie Zheng, Junhua Wang, Shilun Qiu and Yushan Yan ()
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Qianrong Fang: Center for Catalytic Science and Technology, University of Delaware
Zhongbin Zhuang: Center for Catalytic Science and Technology, University of Delaware
Shuang Gu: Center for Catalytic Science and Technology, University of Delaware
Robert B. Kaspar: Center for Catalytic Science and Technology, University of Delaware
Jie Zheng: Center for Catalytic Science and Technology, University of Delaware
Junhua Wang: Center for Catalytic Science and Technology, University of Delaware
Shilun Qiu: State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University
Yushan Yan: Center for Catalytic Science and Technology, University of Delaware

Nature Communications, 2014, vol. 5, issue 1, 1-8

Abstract: Abstract Covalent organic frameworks (COFs) are an emerging class of porous crystalline polymers with a wide variety of applications. They are currently synthesized through only a few chemical reactions, limiting the access and exploitation of new structures and properties. Here we report that the imidization reaction can be used to prepare a series of polyimide (PI) COFs with pore size as large as 42 × 53 Å2, which is among the largest reported to date, and surface area as high as 2,346 m2 g−1, which exceeds that of all amorphous porous PIs and is among the highest reported for two-dimensional COFs. These PI COFs are thermally stable up to 530 °C. We also assemble a large dye molecule into a COF that shows sensitive temperature-dependent luminescent properties.

Date: 2014
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DOI: 10.1038/ncomms5503

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