Controllable Synthesis and Performance Modulation of 2D Covalent-Organic Frameworks
1Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
Small (Weinheim an Der Bergstrasse, Germany)
|July 21, 2021
Summary
This review summarizes the tailorable construction of 2D covalent-organic frameworks (COFs) for targeted functionalities. It covers preparation strategies, building blocks, and their influence on COF performance in catalysis and optoelectronics.
Area of Science:
- Materials Science
- Organic Chemistry
- Nanotechnology
Background:
- Covalent-organic frameworks (COFs) feature highly ordered structures built from π-conjugated units via covalent bonds.
- Their predictable lattices and tunable properties stem from reticular assembly of organic building blocks.
- COFs have diverse applications in catalysis, energy, proton conduction, and optoelectronics.
Purpose of the Study:
- To provide a comprehensive summary of 2D COF construction for specific functions.
- To bridge the gap in literature regarding tailored 2D COF synthesis and application.
- To highlight the relationship between building block structure and COF performance.
Main Methods:
- Review of key polymerization strategies: boron ester condensation, amine-aldehyde condensation, Knoevenagel condensation, trimerization, Suzuki coupling, and hybrid polycondensation.
- Analysis of representative organic building blocks used in COF synthesis.
- Examination of how molecular and electronic structures of building blocks dictate COF properties.
Main Results:
- Detailed overview of established and emerging COF synthesis methodologies.
- Identification of crucial building blocks and their structure-property relationships.
- Demonstration of how tailored building blocks lead to enhanced COF functionalities.
Conclusions:
- 2D COFs offer significant potential for advanced applications due to their tunable nature.
- Strategic selection and design of building blocks are critical for achieving targeted functionalities.
- Further research into 2D COFs promises breakthroughs in catalysis, energy, and optoelectronics.
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