title: Immobilised molecular catalysts and the role of the supporting metal substrate.
abstract: This work demonstrates that immobilising molecular catalysts on metal substrates can attenuate their reactivity. In particular, the reactivity towards molecular oxygen of both ruthenium tetraphenyl porphyrin (Ru-TPP) and its Ti analogue (Ti-TPP) on Ag(111) was studied as benchmark for the interaction strength of such metal-organic complexes with possible reactants. Here, Ru-TPP proves to be completely unreactive and Ti-TPP strongly reactive towards molecular oxygen; along with comparison to work in the literature, this suggests that studies into immobilised catalysts might find fruition in considering species traditionally seen as too strongly interacting.
authors.affiliation: Physik-Department E20, Technische Universität München, D-85748 Garching, Germany. francesco.allegretti@ph.tum.de.
authors.forename: David A
authors.initials: DA
authors.lastname: Duncan
authors.forename: Peter S
authors.initials: PS
authors.lastname: Deimel
authors.forename: Alissa
authors.initials: A
authors.lastname: Wiengarten
authors.forename: Runyuan
authors.initials: R
authors.lastname: Han
authors.forename: Robert G
authors.initials: RG
authors.lastname: Acres
authors.forename: Willi
authors.initials: W
authors.lastname: Auwärter
authors.forename: Peter
authors.initials: P
authors.lastname: Feulner
authors.forename: Anthoula C
authors.initials: AC
authors.lastname: Papageorgiou
authors.forename: Francesco
authors.initials: F
authors.lastname: Allegretti
authors.forename: Johannes V
authors.initials: JV
authors.lastname: Barth