title: Photoelectron spectroscopy on thin films of extended zinc porphyrazines.
abstract: Photoemission measurements were performed on a series of stepwise benzoannelated zinc porphyrazine molecules in thin films. The electronic structure of tert-butyl-substituted zinc tetraazaporphyrin, phthalocyanine, and naphthalocyanine is investigated using mainly EUV synchrotron radiation. A detailed analysis of the zinc satellites in the spectra of the valence region is performed in an attempt to infer the effect of ligand size extension on the metal-ligand interactions. No differences in the character of the bond between zinc and ligand were detected as a function of ligand size. The results are compared with those for the respective metal-free and copper-containing molecules.
authors.affiliation: Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie, Max-Born-Strasse 2A, D-12489 Berlin, Germany.
authors.forename: D
authors.initials: D
authors.lastname: Pop
authors.forename: B
authors.initials: B
authors.lastname: Winter
authors.forename: W
authors.initials: W
authors.lastname: Freyer
authors.forename: W
authors.initials: W
authors.lastname: Widdra
authors.forename: I V
authors.initials: IV
authors.lastname: Hertel
mesh_terms: D009942:Organometallic Compounds / Q000737:chemistry*; D013053:Spectrophotometry; D015032:Zinc / Q000737:chemistry*
chemical_list: D009942:Organometallic Compounds; D015032:Zinc