title: Templated self-assembly and local doping of molecules on epitaxial hexagonal boron nitride.
abstract: Using low-temperature scanning tunneling microscopy, we show that monolayer hexagonal boron nitride (h-BN) on Ir(111) acts as ultrathin insulating layer for organic molecules, while simultaneously templating their self-assembly. Tunneling spectroscopy experiments on cobalt phthalocyanine (CoPC) reveal narrow molecular resonances and indicate that the charge state of CoPC is periodically modulated by the h-BN moiré superstructure. Molecules in the second layer show site-selective adsorption behavior, allowing the synthesis of molecular dimers that are spatially ordered and inaccessible by usual chemical means.
authors.affiliation: Department of Applied Physics, Aalto University School of Science , P.O. Box 15100, 00076 Aalto, Finland.
authors.forename: Fabian
authors.initials: F
authors.lastname: Schulz
authors.forename: Robert
authors.initials: R
authors.lastname: Drost
authors.forename: Sampsa K
authors.initials: SK
authors.lastname: Hämäläinen
authors.forename: Peter
authors.initials: P
authors.lastname: Liljeroth