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Journal articles
One-pot cascade syntheses of microporous and mesoporous pyrazine-linked covalent organic frameworks as Lewis-acid catalysts
Abstract : One-Pot Cascade Syntheses of Microporous and Mesoporous Pyrazine-Linked Covalent Organic Frameworks as Lewis-Acid Catalysts * Covalent organic frameworks (COFs) are crystalline porous solids with broad potential applications. So far, the successful construction of COFs was 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 as well as 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.
https://hal-normandie-univ.archives-ouvertes.fr/hal-03039940
Contributor : Valentin Valtchev Connect in order to contact the contributor
Submitted on : Wednesday, December 9, 2020 - 1:43:20 PM
Last modification on : Tuesday, January 4, 2022 - 6:08:38 AM
Long-term archiving on: : Wednesday, March 10, 2021 - 6:19:25 PM
Contributor : Valentin Valtchev Connect in order to contact the contributor
Submitted on : Wednesday, December 9, 2020 - 1:43:20 PM
Last modification on : Tuesday, January 4, 2022 - 6:08:38 AM
Long-term archiving on: : Wednesday, March 10, 2021 - 6:19:25 PM
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