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One-pot cascade syntheses of microporous and mesoporous pyrazine-linked covalent organic frameworks as Lewis-acid catalysts

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Abstract

Covalent organic frameworks (COFs) are crystalline porous solids with broad potential applications. So far, the successful construction of COFs has been limited to a few condensation reactions, and nearly all COFs were obtained by single-step synthesis based on predesigned linkers. Here, we report a general strategy in view of a one-pot cascade reaction to prepare both microporous and mesoporous fully π-conjugated pyrazine-linked COF materials (PZ-COFs). The obtained PZ-COFs show high chemical stability, large specific surface areas and promising H2, CH4 and CO2 uptake capacities. Furthermore, we demonstrate that manganese(II)-incorporated PZ-COFs can act as excellent Lewis-acid catalysts for the cyanosilylation of aromatic aldehydes. This study not only provides a facile method to synthesize COFs required for multistep reactions but also expands the applications of COFs as promising catalysts.

Graphical abstract: One-pot cascade syntheses of microporous and mesoporous pyrazine-linked covalent organic frameworks as Lewis-acid catalysts

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Publication details

The article was received on 22 Dec 2018, accepted on 15 Mar 2019 and first published on 18 Mar 2019


Article type: Paper
DOI: 10.1039/C8DT05056B
Citation: Dalton Trans., 2019, Advance Article

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    One-pot cascade syntheses of microporous and mesoporous pyrazine-linked covalent organic frameworks as Lewis-acid catalysts

    Y. Ma, X. Liu, X. Guan, H. Li, Y. Yusran, M. Xue, Q. Fang, Y. Yan, S. Qiu and V. Valtchev, Dalton Trans., 2019, Advance Article , DOI: 10.1039/C8DT05056B

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