A team of researchers from Heinrich Heine University Düsseldorf and the University of Siegen has developed a new compound called a covalent organic framework (COF) based on condensed phosphonic acids. This compound is stable and can be used to capture carbon dioxide (CO2), according to a study published in Nature Communications.

COFs are porous crystalline materials that form scaffold-like structures with chemical bonds formed via shared electron pairs. The researchers, led by Dr. Gündoğ Yücesan and Professor Dr. Jörn Schmedt auf der Günne, have introduced a simple synthesis method for polyphosphonate COFs. These COFs are stable even in water and electrolytes, making them suitable for various applications.

One key achievement of this study is the development of a sustainable synthesis process for COFs without using solvents. The researchers were able to confirm the bonding structure of the compound using nuclear magnetic resonance, despite the compounds being amorphous and challenging to crystallize.

The polyphosphonate COFs have potential applications in capturing CO2 and can be used for waste gas cleaning and reducing greenhouse gas emissions. The researchers highlight the importance of these substances for environmental protection.



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