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DS: Fachverband Dünne Schichten
DS 42: Poster I: Progress in Micro- and Nanopatterning: Techniques and Applications (jointly with O); Spins in Organic Materials; Ion Interactions with Nano Scale Materials; Organic Electronics and Photovoltaics; Plasmonics and Nanophotonics (jointly with HL and O); High-k and Low-k Dielectrics (jointly with DF); Organic Thin Films; Nanoengineered Thin Films; Layer Deposition Processes; Layer Properties: Electrical, Optical, and Mechanical Properties; Thin Film Characterisation: Structure Analysis and Composition; Application of Thin Films
DS 42.11: Poster
Mittwoch, 16. März 2011, 15:00–17:30, P1
Electron exchange in a heterocycle-bridged biferrocene mixed-valence compound — •Nicolas Yèche1, Yulia Krupskaya2, Alexander Hildebrandt3, Hans-Henning Klauß1, Vladislav Kataev2, and Heinrich Lang3 — 1Institut für Festkörperphysik ,TU Dresden — 2Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden — 3Institut für Chemie, TU Chemnitz
Symmetrical systems comprising two or more metallocene units sometimes present interesting reduction and oxidation behavior: each of the metallocene unit can be separately oxidized/reduced, giving rise to intermediate valence compounds called "mixed valence" compounds. We present electrochemistry, magnetization, ESR and 57Fe mössbauer spectroscopy measurement of a phenylpyridine bridged biferrocene compound in the mixed valence Fe(II)-Fe(III) state comparing it to normal Fe(II)-Fe(II) state. Resonance forms are observed in mössbauer spectroscopy at room temperature which indicates that the rate of the change between the Fe(II)-Fe(III) state and the Fe(III)-Fe(II) state is greater than 10−7s. Further results and comarative analysis will be discussed.