2D Conjugated Covalent Organic Frameworks: Defined Synthesis and Tailor-Made Functions
Ting Zhang1,2, Guang Zhang2, Long Chen1,2
1State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, China.
Accounts of Chemical Research
|January 13, 2022
Summary
This study presents new strategies for designing and synthesizing 2D conjugated covalent organic frameworks (COFs). These advancements facilitate the development of advanced materials for energy storage and other applications.
Area of Science:
- Materials Science
- Polymer Chemistry
- Nanotechnology
Background:
- Covalent organic frameworks (COFs) are crystalline porous polymers with significant research interest.
- Two-dimensional (2D) conjugated COFs show promise in gas storage, catalysis, sensing, and energy applications.
- Efficient synthesis and structural design of 2D COFs remain a challenge.
Purpose of the Study:
- To summarize recent contributions to the design, synthesis, and application of 2D conjugated COFs.
- To present novel strategies for facile synthesis and stabilization of 2D COFs.
- To explore the potential of engineered 2D COFs for energy storage and other applications.
Main Methods:
- Developed a "two-in-one" strategy for synthesizing 2D imine COFs.
- Employed planar building blocks and donor-acceptor structures for COF stabilization.
- Utilized skeleton engineering to incorporate redox-active moieties for energy storage investigations.
Main Results:
- Achieved facile synthesis of 2D imine COFs with good reproducibility and solvent adaptability.
- Demonstrated methods to stabilize 2D conjugated COFs, enabling fabrication of COF films.
- Engineered COFs with tunable active sites for systematic structure-property relationship studies in energy storage.
- Developed new arylamine-linked and sulfur-rich COFs with enhanced stability and performance for pseudocapacitive energy storage, Li storage, and proton conduction.
Conclusions:
- The presented strategies offer efficient pathways for designing and synthesizing advanced 2D conjugated COFs.
- Engineered 2D COFs show great potential for energy storage and other applications.
- Further research into challenges and prospects of 2D COFs is crucial for practical applications.
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