Structural study of monolayer cobalt phthalocyanine adsorbed on graphite

Abstract

We present microscopic investigations on the two-dimensional arrangement of cobalt phthalocyanine molecules on a graphite (HOPG) substrate in the low coverage regime. The initial growth and ordering of molecular layers is revealed in high resolution scanning tunneling microscopy (STM). On low coverages single molecules orient mostly along one of the substrate lattice directions, while they form chains at slightly higher coverage. Structures with two different unit cells can be found from the first monolayer on. A theoretical model based on potential energy calculations is presented, which relates the two phases to the driving ordering forces.

arXiv comment9 pages, 5 figures

References in corpus (4)

• Spin relaxation in a nanowire organic spin valve: Observation of extremely long spin relaxation times
• Interplay of hydrogen bonding and molecule-substrate interaction in self-assembled adlayer structures of a hydroxyphenyl-substituted porphyrin
• Magnetic field-modulated exciton generation in organic semiconductors: an intermolecular quantum correlation effect
• Investigation of Ultrathin Layers of Bis(phthalocyaninato)lutetium(III) on Graphite

Cited by in corpus (3)

• Interplay of hydrogen bonding and molecule-substrate interaction in self-assembled adlayer structures of a hydroxyphenyl-substituted porphyrin
• Insights into radiation damage from atomic resolution scanning transmission electron microscopy imaging of mono-layer CuPcCl${}_{16}$ films on graphene
• Charge order in an interacting monolayer under transverse bias