Scientists have successfully created a new form of carbon called diamondiyne, expanding the range of structures that this versatile element can form. Developed by researchers in Sweden, the material has a three-dimensional bonding network similar to diamond but a more open, porous structure. The discovery could help scientists explore new materials with unusual physical and electronic properties.
What Is Diamondiyne?
Carbon exists in several forms, including diamond, graphite, graphene and carbon nanotubes. These materials contain the same element but have different atomic arrangements, giving them distinct properties.
Diamondiyne is different because its carbon atoms form covalent bonds in all three dimensions, as they do in diamond. However, its structure includes both single and triple carbon–carbon bonds, creating an expanded network with more space between parts of the structure.
How Researchers Created the New Material
The research team, led by scientists at the University of Gothenburg, used a carefully controlled chemical reaction at the boundary between two liquids. This method helped carbon-containing molecules join together gradually, allowing the desired crystalline structure to form.
Creating diamondiyne had been challenging for decades because one of its essential building blocks is unstable, while the strong carbon–carbon bonds make it difficult to produce an ordered three-dimensional crystal.
The researchers reported their findings in Angewandte Chemie International Edition in September 2026.
How Is It Different From Diamond?
Unlike diamond’s tightly connected atomic network, diamondiyne has a more porous structure. Its unusual combination of carbon bonding types creates a different arrangement that may lead to distinctive material properties.
The team produced thin films containing diamondiyne crystals. The films covered an area of around five square centimetres, although the individual crystalline regions remain extremely small. Researchers used transmission electron microscopy to examine the material’s structure.
What Could Diamondiyne Be Used For?
The material may eventually prove useful in materials science, depending on its physical, chemical and electronic properties. Its porous structure and unusual bonding arrangement make it an interesting candidate for further investigation.
However, its practical applications have not yet been established. Researchers are working to produce larger crystals so they can measure its properties more accurately and determine whether it could be useful in future technologies.
Why the Discovery Matters
The creation of diamondiyne demonstrates how advances in chemical synthesis can turn long-predicted structures into real materials. It also highlights the versatility of carbon, whose different atomic arrangements underpin technologies ranging from electronics to advanced industrial materials.
For now, diamondiyne remains an emerging research material rather than a commercial alternative to diamond. Further experiments will determine its potential and whether its distinctive structure can lead to practical applications.