Azo-Linked Covalent Organic Frameworks
Chao Liu1, Wen-Zhuang Wang2, Hui-Hui Sun2
1School of Energy and Environment, Southeast University, Nanjing, Jiangsu, 211189, China.
Chemsuschem
|October 21, 2025
Summary
A new method enables the synthesis of crystalline azo-linked covalent organic frameworks (COFs). These advanced materials exhibit excellent optoelectronic properties and photocatalytic efficiency, paving the way for high-performance applications.
Area of Science:
- Materials Science
- Polymer Chemistry
- Nanotechnology
Background:
- Covalent organic frameworks (COFs) are crystalline porous polymers with tunable properties.
- Azo bonds (-N=N-) offer photoactive and electroactive characteristics but pose synthetic challenges for crystalline COF formation due to low reversibility.
- Previous synthesis methods often resulted in amorphous polymers instead of ordered crystalline frameworks.
Purpose of the Study:
- To introduce the emerging field of azo-linked COFs.
- To highlight advancements in the synthesis of crystalline azo-linked COFs.
- To explore the optoelectronic properties and photocatalytic applications of these novel materials.
Main Methods:
- Utilizing the "COF-to-COF" structural transformation strategy.
- Employing azo bonds for covalent linkage within the framework.
- Characterizing the crystalline structure and optoelectronic properties of the synthesized COFs.
Main Results:
- Successful construction of crystalline azo-linked COFs overcoming previous synthetic limitations.
- Demonstrated exceptional optoelectronic properties.
- Achieved high photocatalytic efficiency.
Conclusions:
- The "COF-to-COF" strategy is effective for synthesizing crystalline azo-linked COFs.
- Azo-linked COFs show significant potential for advanced applications, particularly in photocatalysis.
- Further research is needed to accelerate the development and application of these materials.
Keywords:
azo linkagescovalent organic frameworkscovalent organic frameworks‐to‐covalent organic frameworks transformationphotocatalysissynthesisMore Related Videos
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