Dresden 2009 – scientific programme
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DS: Fachverband Dünne Schichten
DS 16: Poster I
DS 16.17: Poster
Tuesday, March 24, 2009, 09:30–12:30, P5
Energy levels of new perfluoroalkyl- substituted phthalocyanines derived from electrochemical characteristics — •Steffi Nagel1, Martin Lener1, Christopher Keil1, Robert Gerdes2, Sergiu Gorun2, and Derck Schlettwein1 — 1Justus-Liebig-Universität Gießen, Institut für Angewandte Physik, Heinrich-Buff-Ring 16, D-35392, Gießen. eMail: schlettwein@uni-giessen.de — 2New Jersey Institute of Technology, Department of Chemistry and Environmental Science, Newark, NJ 07102, USA
Octa(perfluoropropyl) octafluoro phthalocyanine complexes (F64Pc), new molecules with high electron affinity and small intermolecular coupling energies, were investigated. Studies of charge transfer across the interface under varied controlled potential in the electrolyte (cyclic voltammetry) were used to determine the molecular energy levels of the molecules. Optical spectroscopy was used to analyze details of the charged molecular state. Furthermore, optical absorbance measurements at thin films revealed a small extent of intermolecular electronic coupling. The use as n-conducting air stable semiconductors and electrochromic switches will be discussed.