Scientists have developed a new type of three-dimensional material that could help create better batteries, remove harmful pollutants from the environment and support many other advanced technologies.
Just as importantly, they were able to map its atomic structure for the first time, giving researchers valuable information that could speed up the design of even more useful materials.
The study, published in Science Advances, was carried out by researchers from several Japanese institutions, including the National Institute of Natural Sciences, Osaka University, Nagoya University and SOKENDAI.
The new material belongs to a family called three-dimensional covalent organic frameworks, or 3D COFs.
These are highly ordered materials made from lightweight elements linked together into strong, repeating networks.
Their tiny pores give them an enormous internal surface area, making them useful for capturing gases, storing energy and carrying out chemical reactions.
Scientists have long believed that 3D COFs could be used in many important ways. They may one day help capture carbon dioxide from the atmosphere, remove toxic chemicals from polluted water and soil, improve battery performance or serve as catalysts that make chemical reactions happen faster.
However, making these materials has been a major challenge.
When scientists try to build 3D COFs, the chemical bonds often form too quickly. Instead of creating a neat, well-organized crystal, the material becomes disordered. This makes it difficult to study its structure and understand how it works. As a result, only a small number of 3D COFs have been fully analyzed at the atomic level.
To solve this problem, the research team explored a different way of connecting the building blocks. Instead of using the chemical bonds found in most existing COFs, they used borate ions, which contain the elements boron and oxygen. These borate linkages form strong, rigid connections that help the material organize itself into a stable crystal.
Using this new approach, the scientists successfully created a new 3D COF called TCTP-COF.
The material has a highly ordered structure with many tiny open spaces throughout it. These pores allow gases, liquids or ions to move through the material, making it attractive for a wide range of future applications.
The researchers also used an advanced technique called microcrystal electron diffraction to determine the material’s atomic structure. This was the first time a borate-linked 3D crystalline COF had been fully analyzed in this way.
Knowing the exact arrangement of atoms is important because it helps scientists understand why a material behaves the way it does. With this knowledge, they can modify the structure to improve its strength, stability, pore size or other useful properties for different applications.
The team believes their work opens the door to designing many new 3D COFs with customized features. Future versions could be optimized to store more energy in batteries, capture larger amounts of carbon dioxide, filter pollutants from water or air, or improve industrial chemical processes.
Although more research is needed before these materials reach commercial products, this breakthrough provides scientists with a powerful new design strategy.
By creating a new type of highly ordered 3D framework and revealing its atomic structure, the researchers have taken an important step toward developing smarter materials for clean energy, environmental protection and other technologies of the future.
