Nanodiamonds By Molecular Design
A team led by Yingke Wu and Tanja Weil at the Max Planck Institute for Polymer Research synthesized 3–4 nm nanodiamonds from nanographene building blocks under high pressure and temperature, publishing the results in Nature. The bottom-up method gives precise control over nanodiamond size and allows silicon- and germanium-based optical emitters to be incorporated during synthesis without post-processing, which is relevant for carbon-based quantum and photonic material development.
Graphene has been utilized to produce nanodiamonds with specific sizes and properties. These nanodiamonds, synthesized from molecular precursors, demonstrate higher purity and a narrower size distribution compared to those produced by traditional methods.
A research team led by the Max Planck Institute for Polymer Research has developed a method to synthesize nanodiamonds from graphene scraps. This new approach allows for precise control over the size and properties of the resulting diamond particles.
Nanodiamonds, measuring only a few nanometers, have potential applications in quantum technologies, sensing, and biomedical research. They can function as tiny light sources, sensitive magnetic field sensors, or computing elements in quantum computers. The synthesis strategy, published in Nature, involves building nanodiamonds from molecularly defined nanographene building blocks under high pressure and temperature, resulting in highly crystalline nanostructures.
The bottom-up approach offers molecular-level control, enabling effective management of the nanodiamonds' properties. This method yields particularly small and uniform nanodiamonds, around three to four nanometers in size. Additionally, optically active color centers can be incorporated during synthesis, allowing for the creation of fluorescent nanodiamonds with tailored optical properties in a single step.
According to Professor Tanja Weil, this platform provides a scalable foundation for developing quantum sensors, integrated photonic emitters, and programmable diamond-based nanomaterials. The molecular nanodiamonds present promising opportunities for quantum technology applications, such as stable single-photon sources and nanoscale sensors. They also hold potential for biological and medical research, potentially serving as robust optical reporters for visualizing cellular processes at small scales.
The study included contributions from the German Electron Synchrotron (DESY), Goethe University Frankfurt, Johannes Gutenberg University Mainz, the Leibniz Institute for New Materials, the Max Planck Institute of Colloids and Interfaces, the Max Planck Institute for Polymer Research, the University of Cambridge, Saarland University, the University of Göttingen, and Ulm University.
Source: Graphene Feed