title: Photoinduced reconfiguration cycle in a molecular adsorbate layer studied by femtosecond inner-shell photoelectron spectroscopy.
abstract: A time-resolved study of core-level chemical shifts in a monolayer of aromatic molecules reveals complex photoinduced reaction dynamics. The combination of electron spectroscopy for chemical analysis and ultrashort pulse excitation in the extreme ultraviolet allows performing time-correlated 4d-core-level spectroscopy of iodine atoms that probe the local chemical environment in the adsorbate molecule. The selectivity of the method unveils metastable molecular configurations that appear about 50 ps after the excitation and are efficiently quenched back to the ground state.
authors.affiliation: Molekül und Oberflächenphysik, Fakultät für Physik, Universität Bielefeld, Universitätsstraße 25, 33615 Bielefeld, Germany.
authors.forename: H
authors.initials: H
authors.lastname: Dachraoui
authors.forename: M
authors.initials: M
authors.lastname: Michelswirth
authors.forename: P
authors.initials: P
authors.lastname: Siffalovic
authors.forename: P
authors.initials: P
authors.lastname: Bartz
authors.forename: C
authors.initials: C
authors.lastname: Schäfer
authors.forename: B
authors.initials: B
authors.lastname: Schnatwinkel
authors.forename: J
authors.initials: J
authors.lastname: Mattay
authors.forename: W
authors.initials: W
authors.lastname: Pfeiffer
authors.forename: M
authors.initials: M
authors.lastname: Drescher
authors.forename: U
authors.initials: U
authors.lastname: Heinzmann