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  Increasing the Accessibility of Internal Catalytic Sites in Covalent Organic Frameworks by Introducing a Bicontinuous Mesostructure

Liu, Y., Zhou, Q., Yu, H., Yang, Q., Wang, M., Huang, C., et al. (2024). Increasing the Accessibility of Internal Catalytic Sites in Covalent Organic Frameworks by Introducing a Bicontinuous Mesostructure. Angewandte Chemie International Edition, 63(15): e202400985. doi:10.1002/anie.202400985.

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Datensatz-Permalink: https://hdl.handle.net/21.11116/0000-000F-24C6-9 Versions-Permalink: https://hdl.handle.net/21.11116/0000-000F-DD30-2
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 Urheber:
Liu, Yamei1, Autor           
Zhou, Qin2, Autor
Yu, Hongde2, Autor
Yang, Qiqi2, Autor
Wang, Mingchao2, Autor
Huang, Chuanhui2, Autor
Xiang, Luoxing2, Autor
Li, Chen2, Autor
Heine, Thomas2, Autor
Hu, Guoqing2, Autor
Wang, Shengyao2, Autor
Feng, Xinliang1, Autor                 
Mai, Yiyong2, Autor
Affiliations:
1Department of Synthetic Materials and Functional Devices (SMFD), Max Planck Institute of Microstructure Physics, Max Planck Society, ou_3316580              
2External Organizations, ou_persistent22              

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 Zusammenfassung: Introducing continuous mesochannels into covalent organic frameworks (COFs) to increase the accessibility of their inner active sites has remained a major challenge. Here, we report the synthesis of COFs with an ordered bicontinuous mesostructure, via a block copolymer self-assembly-guided nanocasting strategy. Three different mesostructured COFs are synthesized, including two covalent triazine frameworks and one vinylene-linked COF. The new materials are endowed with a hierarchical meso/microporous architecture, in which the mesochannels exhibit an ordered shifted double diamond (SDD) topology. The hierarchically porous structure can enable efficient hole-electron separation and smooth mass transport to the deep internal of the COFs and consequently high accessibility of their active catalytic sites. Benefiting from this hierarchical structure, these COFs exhibit excellent performance in visible-light-driven catalytic NO removal with a high conversion percentage of up to 51.4 %, placing them one of the top reported NO-elimination photocatalysts. This study represents the first case of introducing a bicontinuous structure into COFs, which opens a new avenue for the synthesis of hierarchically porous COFs and for increasing the utilization degree of their internal active sites.

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 Datum: 2024-02-142024-04-08
 Publikationsstatus: Erschienen
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 Identifikatoren: DOI: 10.1002/anie.202400985
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Titel: Angewandte Chemie International Edition
  Kurztitel : Angew. Chem., Int. Ed.
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Weinheim : Wiley-VCH
Seiten: - Band / Heft: 63 (15) Artikelnummer: e202400985 Start- / Endseite: - Identifikator: ISSN: 1433-7851
CoNE: https://pure.mpg.de/cone/journals/resource/1433-7851