Catalyst-Enabled In Situ Linkage Reduction in Imine Covalent Organic Frameworks
| Autor: | Federica Zanca, Peyman Z. Moghadam, Benjamin J. Wylie, William M. Shirley, Hudson Beyzavi, Huong Giang T. Nguyen, Collin G. Borcik, Gregory J. McManus, Mourad Benamara, Isabella A. Riha, Roger D. van Zee, Jiyun Hu |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_classification
Materials science Imine 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Combinatorial chemistry Aldehyde 0104 chemical sciences Bifunctional catalyst Catalysis chemistry.chemical_compound chemistry Covalent bond Moiety General Materials Science Amine gas treating Knoevenagel condensation 0210 nano-technology |
| Zdroj: | ACS Applied Materials & Interfaces. 13:21740-21747 |
| ISSN: | 1944-8252 1944-8244 |
| Popis: | New linkages for covalent organic frameworks (COFs) have been continuously pursued by chemists as they serve as the structure and property foundation for the materials. Developing new reaction types or modifying known linkages have been the only two methods to create new COF linkages. Herein, we report a novel strategy that uses H3PO3 as a bifunctional catalyst to achieve amine-linked COFs from readily available amine and aldehyde linkers. The acidic proton of H3PO3 catalyzes the imine framework formation, which is then in situ reduced to the amine COF by the reductive P-H moiety. The amine-linked COF outperforms its imine analogue in promoting Knoevenagel condensation because of the more basic sites and higher stability. |
| Databáze: | OpenAIRE |
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