Covalent organic framework nanosheets: preparation, properties and applications.
D Rodríguez-San-Miguel1, C Montoro2, F Zamora3
1Department of Chemistry and Applied Biosciences, Institute for Chemical and Bioengineering, ETH Zurich, Vladimir Prelog Weg 1, 8093 Zurich, Switzerland.
Chemical Society Reviews
|March 18, 2020
Summary
Covalent organic frameworks (COFs) are versatile 2D materials. This review explores their formation via bottom-up and top-down methods, highlighting tunable properties for advanced applications.
Area of Science:
- Materials Science
- Nanotechnology
- Chemistry
Background:
- Covalent organic frameworks (COFs) are crystalline, porous materials with tunable 2D or 3D structures.
- COFs can be synthesized as single- or few-layer materials, expanding the family of 2D materials beyond graphene.
- The chemical designability of COFs allows for precise control over functionalities, pore size, and features.
Purpose of the Study:
- To provide a comprehensive overview of the current state-of-the-art in 2D COF nanosheet formation.
- To illustrate rational strategies for COF nanosheet synthesis using both bottom-up and top-down approaches.
- To highlight seminal properties and potential applications of COF nanolayers.
Main Methods:
- Review of established bottom-up strategies for COF nanosheet synthesis.
- Analysis of top-down approaches for nano-structuring pre-formed COFs.
- Selection and discussion of representative COF nanolayer examples.
Main Results:
- Demonstration of diverse COF nanosheet formation techniques.
- Illustration of the structure-property relationships in 2D COFs.
- Showcasing of COF nanolayers with promising material applications.
Conclusions:
- 2D COF nanosheets represent a rapidly advancing field with significant potential.
- The rational design and synthesis of COF nanolayers are crucial for tailored functionalities.
- Future research directions and perspectives in COF nanosheet development are outlined.
