Regensburg 2016 – scientific programme
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DS: Fachverband Dünne Schichten
DS 53: Postersession DS/HL
DS 53.25: Poster
Thursday, March 10, 2016, 16:00–19:00, Poster A
XPS study of Tetraphenylporphyrin layers on Au(111) — •Peter Roese1,2, Philipp Espeter1,2, Christoph Keutner1,2, Dominique Krull1,2, Ulf Berges1,2, and Carsten Westphal1,2 — 1Experimentelle Physik I, TU Dortmund, Otto-Hahn-Straße 4a, 44221 Dortmund, Germany — 2DELTA, Technische Universität Dortmund, Maria-Goeppert-Mayer-Straße 2, 44221 Dortmund, Germany
Porphyrins are important building blocks of life. Furthermore, the interest in applying porphyrins as technical devices increased in recent years. Applications such as organic solar cells [1], organic LED’s [2] or the usage of porphyrins as a photosensibilisator in cancer treatment [3] utilize the strong absorption properties of porphyrins in the visible spectrum. Here, we present the investigation of multilayers of metalfree meso-tetraphenylporphyrin (2HTPP) on an Au(111) surface using x-ray photoelectron spectroscopy (XPS) at the U55 beamline 11 at DELTA. In this study we report on a possible bonding between the molecules in the first interface layer to the Au(111) substrate while the upper molecule layers are deposited in their original form without bonding. References: [1] J. P. Collman et al., Chemical Reviews 104, 561 (2004). [2] J. M. Olson, Biochimica et Biophysica Acta (BBA) - Reviews on Bioenergetics 594, 33 (1980). [3] W. M. Campbell et al., The Journal of Physical Chemistry C 111, 11760 (2007).