Functional Regulation and Stability Engineering of Three-Dimensional Covalent Organic Frameworks
Xinyu Guan1, Qianrong Fang1, Yushan Yan2
1State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, Jilin University, Changchun 130012, China.
Accounts of Chemical Research
|June 27, 2022
Summary
Three-dimensional covalent organic frameworks (3D COFs) offer superior performance in adsorption, catalysis, and sensing. This review details strategies for designing, functionalizing, and enhancing the stability of 3D COFs for practical applications.
Area of Science:
- Materials Science
- Chemistry
- Nanotechnology
Background:
- Covalent organic frameworks (COFs) are a class of porous materials with diverse applications.
- While 2D COFs are widely studied, 3D COFs are less explored due to synthesis and stability challenges.
- 3D COFs possess enhanced surface area, interconnected channels, and tunable structures, making them promising for various applications.
Purpose of the Study:
- To review design principles, functionalization approaches, and stability enhancement methods for 3D COFs.
- To highlight strategies for overcoming crystallization problems and improving chemical stability in 3D COFs.
- To discuss the potential of 3D COFs in adsorption, separation, catalysis, and sensing.
Main Methods:
- Discussion of essential elements in 3D COF construction: topologies, interpenetrations, linkages, and synthetic methods.
- Overview of functionalization strategies: in situ approaches, bottom-up synthesis, and post-synthesis modification.
- Exploration of stability enhancement techniques: introduction of strengthening forces (hydrophobic, Coulombic, steric) and utilization of robust linkages.
Main Results:
- 3D COFs exhibit high surface area, diverse channels, multifarious functionalities, and promising stability.
- Various strategies have been developed for synthesis control, functionalization, and stability enhancement of 3D COFs.
- Despite limitations, significant progress has been made in overcoming crystallization and stability issues.
Conclusions:
- Functional 3D COFs hold great potential for practical applications in adsorption, separation, catalysis, and energy storage.
- Continued advancements in design, preparation, and functionalization are crucial for the widespread utilization of 3D COFs.
- Addressing crystallization and stability challenges is key to unlocking the full potential of these advanced materials.
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