Potassium adsorption on the coronene monolayer has been investigated as a model of the alkali-metal doping of the organic superconductors. It was found that the coronene monolayer underwent a structural rearrangement upon K adsorption. Upon the rearrangement, significant chemical shift of the core levels of coronene was seen, indicating the strong interaction between K and coronene accompanied with charge transfer from K to coronene.
