Two-dimensional sub-stoichiometric covalent organic frameworks: from synthesis to applications
Jiahao Li1, Sen Wang1, Liaoyuan Chen1
1College of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, China. ywpeng@zjut.edu.cn.
Chemical Communications (Cambridge, England)
|July 17, 2025
Summary
Sub-stoichiometric covalent organic frameworks (ss-COFs) offer enhanced functionality with tunable properties due to unreacted sites. These materials show promise for advanced applications in gas separation, catalysis, and sensing.
Area of Science:
- Materials Science
- Chemistry
Background:
- Sub-stoichiometric covalent organic frameworks (ss-COFs) are crystalline porous materials with periodic unreacted sites.
- These sites enhance functionality while maintaining the structural integrity of stoichiometric COFs.
Purpose of the Study:
- To review recent advances in the design and synthesis of 2D ss-COFs.
- To highlight the distinctive properties and potential applications of ss-COFs.
- To discuss challenges and future directions in ss-COF research.
Main Methods:
- Focus on precise stoichiometric control in ss-COF synthesis.
- Analysis of structural properties influenced by unreacted sites.
- Exploration of applications through experimental and theoretical studies.
Main Results:
- ss-COFs exhibit modulated charge transport and light absorption due to reactive sites.
- Post-synthetic modification enables tailored applications.
- Demonstrated potential in gas separation, catalysis, and sensing.
Conclusions:
- ss-COFs represent a promising class of materials with tunable properties.
- Further research is needed to overcome challenges and unlock full application potential.
- Precise stoichiometric control is key to developing advanced ss-COF materials.
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