Tuneable molecular doping of corrugated graphene

Abstract

Density functional theory (DFT) modeling of the physisorption of four different types of molecules (toluene, bromine dimmer, water and nitrogen dioxide) over and above graphene ripples has been performed. For all types of molecules changes of charge transfer and binding energies in respect to flat graphene is found. The changes in electronic structure of corrugated graphene and turn of π-orbitals of carbon atoms in combination with chemical structure of adsorbed molecules are proposed as the causes of difference with the perfect graphene case and variety of adsorption properties of different types of the molecules. Results of calculation suggest that the tops of the ripples are more attractive for large molecules and valley between ripples for small molecules. Stability of molecules on the ripples and energy barriers for migration over flat and corrugated graphene is also discussed.

15 pages, 5 figures, accepted in Surface Science

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Cited by in corpus (6)

• Mechanics of nanoscale wrinkling of graphene on a non-developable spherical surface
• Controlling the nanoscale rippling of graphene with SiO2 nanoparticles
• First-principles modeling of the polycyclic aromatic hydrocarbons reduction
• Vapour sensing properties of graphene-covered gold nanoparticles
• Mapping the nanomechanical properties of graphene suspended on silica nanoparticles
• Charge transfer and weak bonding between molecular oxygen and graphene zigzag edges at low temperatures