2D covalent organic frameworks with built-in amide active sites for efficient heterogeneous catalysis
Yang Li1, Weiben Chen, Ruidong Gao
1Department of Chemistry, Tianjin Key Laboratory of Molecular Optoelectronic Science, School of Science, Tianjin University, Tianjin 300072, P. R. China. long.chen@tju.edu.cn.
Chemical Communications (Cambridge, England)
|November 20, 2019
Summary
Benzene-1,3,5-tricarboxamides (BTAs) are key to supramolecular assembly. Researchers created novel amide-functionalized covalent organic frameworks (COFs) from a BTA-based amine, demonstrating their catalytic efficiency in Knoevenagel condensation reactions.
Area of Science:
- Supramolecular Chemistry
- Materials Science
- Organic Chemistry
Background:
- Benzene-1,3,5-tricarboxamides (BTAs) are recognized for their robust intermolecular hydrogen bonding capabilities, making them valuable precursors for supramolecular structures.
- The development of functional materials with ordered structures is crucial for advanced applications in catalysis and beyond.
Purpose of the Study:
- To synthesize novel amide-functionalized covalent organic frameworks (COFs) utilizing a BTA-based amine.
- To investigate the catalytic activity of these newly synthesized COFs in Knoevenagel condensation reactions.
Main Methods:
- Synthesis of N1,N3,N5-tris(4-aminophenyl)benzene-1,3,5-tricarboxamide (TABTA) as a BTA-based building block.
- Construction of two distinct amide-functionalized COFs from TABTA, characterized for their crystallinity.
- Evaluation of the catalytic performance of the synthesized COFs in Knoevenagel condensation.
Main Results:
- Successful synthesis and characterization of two new amide-functionalized COFs derived from TABTA.
- The synthesized COFs exhibited apparent crystallinity, indicating successful framework formation.
- These COFs demonstrated high efficiency as catalysts for the Knoevenagel condensation reaction.
Conclusions:
- Amide-functionalized covalent organic frameworks (COFs) can be effectively constructed using benzene-1,3,5-tricarboxamide (BTA) based precursors.
- The resulting COFs possess catalytic activity, proving useful for organic transformations like Knoevenagel condensation.
- This work expands the utility of BTAs in creating functional porous materials for catalysis.
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