Coverage-driven dissociation of azobenzene on Cu(111): a route towards defined 
surface functionalization

Willenbockel, Martin; Maurer, Reinhard J.; Bronner, Christopher; Schulze, Michael; Stadtmüller, Benjamin; Soubatch, Serguei; Tegeder, Petra; Reuter, Karsten; Tautz, F. Stefan

doi:10.1039/C5CC05003K

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Coverage-driven dissociation of azobenzene on Cu(111): a route towards defined surface functionalization

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Willenbockel, M., Maurer, R. J., Bronner, C., Schulze, M., Stadtmüller, B., Soubatch, S., et al. (2015). Coverage-driven dissociation of azobenzene on Cu(111): a route towards defined surface functionalization. Chemical Communications, 51(83), 15324-15327. doi:10.1039/C5CC05003K.

Cite as: https://hdl.handle.net/21.11116/0000-000A-BB22-D

Abstract

We investigate the surface-catalyzed dissociation of the archetypal molecular switch azobenzene on the Cu(111) surface. Based on X-ray photoelectron spectroscopy, normal incidence X-ray standing waves and density functional theory calculations a detailed picture of the coverage-induced formation of phenyl nitrene from azobenzene is presented. Furthermore, a comparison to the azobenzene/Ag(111) interface provides insight into the driving force behind the dissociation on Cu(111). The quantitative decay of azobenzene paves the way for the creation of a defect free, covalently bonded monolayer. Our work suggests a route of surface functionalization via suitable azobenzene derivatives and the on surface synthesis concept, allowing for the creation of complex immobilized molecular systems.