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Updated: Mar 6, 2026
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Development of Heterogeneous Enantioselective Catalysts using Chiral Metal-Organic Frameworks MOFs
Published on: January 17, 2020
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Engineering Amino Acid Functionalized Chiral Carbon-Organic Frameworks for Enhanced Photocatalytic Hydrogen
Yuanyuan Li1,2, Jinhui Yang1, Haoyan Zhang1
1School of Chemistry and Chemical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, China.
Angewandte Chemie (International Ed. in English)
|March 5, 2026
Summary
Chiral functionalization of covalent organic frameworks (COFs) boosts photocatalytic hydrogen evolution by over fivefold. This strategy leverages spin states and charge transfer for enhanced performance in COF-based photocatalysts.
Area of Science:
- Materials Science
- Photocatalysis
- Organic Chemistry
Background:
- Spin-dependent recombination of photogenerated charges is often overlooked in covalent organic framework (COF) photocatalysis.
- Correlating COF structure with photogenerated charge spin states for improved hydrogen evolution remains a challenge.
Purpose of the Study:
- To engineer chiral TpPa-1 COFs using amino acid functionalization for enhanced photocatalytic hydrogen evolution.
- To investigate the role of chirality and spin states in photocatalytic performance.
Main Methods:
- Chiral amino acid functionalization of TpPa-1 COFs.
- Systematic optimization of photocatalyst performance.
- Fabrication of S-scheme heterojunctions with polymeric carbon nitride (g-C3N4).
Main Results:
- Chiral TpPa-1 COFs exhibited a ~5-fold enhancement in photocatalytic hydrogen evolution.
- Achieved a turnover frequency (TOF) of 9867 h⁻¹, quantum yield (AQY) of 66% at 475 nm, and hydrogen evolution rate (HER) of 2.54 mmol h⁻¹.
- Demonstrated efficient charge separation through synergistic effects of chirality and directional charge transfer.
- Developed an S-scheme heterojunction for overall water splitting without oxygen evolution co-catalysts.
Conclusions:
- Chiral functionalization offers a universal strategy for designing efficient COF-based photocatalysts.
- Understanding charge spin states is crucial for optimizing photocatalytic hydrogen evolution.
- The developed chiral COFs show significant potential for energy conversion applications.
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