Photoelectron spectroscopy on thin films of extended zinc porphyrazines.
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.
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Max-Born-Institut für Nichtlineare Optik und Kurzzeitspektroskopie, Max-Born-Strasse 2A, D-12489 Berlin, Germany.
Winter
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B
Freyer
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Widdra
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W
Hertel
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IV
D009942:Organometallic Compounds / Q000737:chemistry*; D013053:Spectrophotometry; D015032:Zinc / Q000737:chemistry*
D009942:Organometallic Compounds; D015032:Zinc