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Related Experiment Video

Updated: Jul 9, 2025

Development of Heterogeneous Enantioselective Catalysts using Chiral Metal-Organic Frameworks MOFs
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Metal-organic framework boosts heterogeneous electron donor-acceptor catalysis.

Jiaxin Lin1, Jing Ouyang1, Tianyu Liu1

  • 1Department of Chemistry and the Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration & Reconstruction, The Hong Kong University of Science and Technology (HKUST), Kowloon, Hong Kong SAR, China.

Nature Communications
|November 27, 2023
PubMed
Summary

This study introduces a novel Metal-Organic Framework (MOF), Zr-PZDB, as a heterogeneous catalyst for enhanced electron donor-acceptor (EDA) photoactivation. This MOF efficiently catalyzes C-H coupling reactions and late-stage functionalization, outperforming homogeneous catalysts.

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Area of Science:

  • Materials Science
  • Catalysis
  • Organic Chemistry

Background:

  • Metal-Organic Frameworks (MOFs) are versatile porous materials for heterogeneous catalysis.
  • Electron donor-acceptor (EDA) photoactivation is a key strategy in chemical synthesis.
  • Developing efficient and stable heterogeneous catalysts for EDA reactions remains a challenge.

Purpose of the Study:

  • To design and synthesize a novel MOF, Zr-PZDB, for heterogeneous EDA photoactivation.
  • To investigate the catalytic performance of Zr-PZDB in C-H coupling and late-stage functionalization reactions.
  • To elucidate the mechanism of MOF-enabled EDA photoactivation.

Main Methods:

  • Synthesis of Zr-PZDB MOF using Zr6-clusters and 4,4'-(phenazine-5,10-diyl)dibenzoate (PZDB) linkers.
  • Catalytic evaluation of Zr-PZDB in Minisci-type reactions and coupling of aryl sulfonium salts.
  • Spectroscopic studies (e.g., UV-Vis, EPR) to analyze EDA interactions and reaction mechanisms.

Main Results:

  • Zr-PZDB demonstrated superior catalytic activity in various C-H coupling reactions with N-heterocycles and diverse coupling partners.
  • The MOF enabled efficient late-stage functionalization of bioactive molecules.
  • Spectroscopic evidence confirmed EDA interactions and a photoinduced single electron transfer mechanism within the MOF.
  • The crowded MOF environment protected active centers, enhancing catalytic stability.

Conclusions:

  • Zr-PZDB serves as an effective heterogeneous donor catalyst for EDA photoactivation.
  • This work presents the first example of MOF-enabled heterogeneous EDA photoactivation.
  • The developed MOF offers a promising platform for sustainable and efficient organic synthesis.