An organic-inorganic hybrid material with new properties has just been designed its originality a sophisticated multilayer structure. That presents unique electronic optical capabilities as controllable programmable. The interest of this type of hetero structure by successfully adjusting the electrical magnetic or optical properties of a material such as graphene new perspectives can be imagined in numerous industrial applications: transistors, memories, integrated circuits, etc.
Some crystalline inorganic materials have a single layer of atoms such as graphene or boron nitride. Stacked on top of each other these two dimensional materials may present modulations of energy at their surface called periodic potentials. This phenomenon can be translated by the modification of certain chemical and physical properties of a crystal such as grapheme. However, these energy variations are limited and uncontrollable difficult to profit from it.
Researchers at the nano-chemistry laboratory of the Institute for Science and engineering in collaboration with the University of Mons, the Max Planck Institute for research on polymers (Germany) and the Technical University of Dresden (Germany), had the idea of Fixing on the graphene a monolayer of organic molecules. These organic molecular bricks consist of a long carbon chain and a functional head forming on the graphene a network with controlled geometry up to the atom.
The advantage: this completely organic-inorganic multi-layer provides the ability to modulate the surface potential of the graphene sheet underlying. It is thus possible, by adjusting the organic molecules to pre-program the periodicity, the amplitude and the sign of these induced potentials.