π-Like band structure observed for coronene monolayers deposited on Ag(111)

Angle-resolved ultraviolet photoelectron spectroscopy (ARUPS) was performed for coronene monolayers deposited on Ag(111) showing that the polarization dependence of the silver sp-bands is changed by the molecular adlayer. The change was observed at back-folded replicas of the substrate bands and is reminiscent of the π-bands of epitaxial graphene. A transfer of the molecule's π-character to the silver sp-bands is concluded to cause the graphene-like properties observed.