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Protonated Imine‐Linked Covalent Organic Frameworks for Photocatalytic Hydrogen Evolution

Open access
Yang, Jin, Acharjya, Amitava, Ye, Meng‐Yang, Rabeah, Jabor, Li, Shuang, Kochovski, Zdravko, Youk, Sol, Roeser, Jérôme, Grüneberg, Julia, Penschke, Christopher, Schwarze, Michael, Wang, Tianyi, Lu, Yan, van de Krol, Roel, Oschatz, Martin, Schomäcker, Reinhard, Saalfrank, Peter, Thomas, Arne·2021·Angewandte Chemie International Edition

Abstract

Covalent organic frameworks (COFs) have emerged as an important class of organic semiconductors and photocatalysts for the hydrogen evolution reaction (HER)from water. To optimize their photocatalytic activity, typically the organic moieties constituting the frameworks are considered and the most suitable combinations of them are searched for. However, the effect of the covalent linkage between these moieties on the photocatalytic performance has rarely been studied. Herein, we demonstrate that donor‐acceptor (D‐A) type imine‐linked COFs can produce hydrogen with a rate as high as 20.7 mmol g−1 h−1 under visible light irradiation, upon protonation of their imine linkages. A significant red‐shift in light absorbance, largely improved charge separation efficiency, and an increase in hydrophilicity triggered by protonation of the Schiff‐base moieties in the imine‐linked COFs, are responsible for the improved photocatalytic performance.

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Metadata

Authors
Yang, J., Acharjya, A., Ye, M., Rabeah, J., Li, S., Kochovski, Z., Youk, S., Roeser, J., Grüneberg, J., Penschke, C., Schwarze, M., Wang, T., Lu, Y., van de Krol, R., Oschatz, M., Schomäcker, R., Saalfrank, P., & Thomas, A.
Venue
Angewandte Chemie International Edition
Publisher
Wiley
Published
2021-07-26
Volume
60
Issue
36
Pages
19797-19803
ISSN
  • 1433-7851 (ISSN-L)
  • 1521-3773
OpenAlex
W3165523086
Cited by
444
References
37
FWCI
18.95
Type
journal article
Language
en
Open access
hybrid

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CoChat. (2026). Citation check: Protonated Imine‐Linked Covalent Organic Frameworks for Photocatalytic Hydrogen Evolution. https://app.cochat.ai/papers/10.1002/anie.202104870
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Yang, J., Acharjya, A., Ye, M., Rabeah, J., Li, S., Kochovski, Z., Youk, S., Roeser, J., Grüneberg, J., Penschke, C., Schwarze, M., Wang, T., Lu, Y., van de Krol, R., Oschatz, M., Schomäcker, R., Saalfrank, P., & Thomas, A. (2021). Protonated Imine‐Linked Covalent Organic Frameworks for Photocatalytic Hydrogen Evolution. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.202104870

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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