Berlin 2008 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe
DS: Fachverband Dünne Schichten
DS 19: Organic Interfaces (SYSA 6)
DS 19.11: Vortrag
Mittwoch, 27. Februar 2008, 17:15–17:30, H 2013
Structure and electronic properties of mercaptoalkyl-ferrocenes, studies by STM — Lars Müller-Meskamp1, •Silvia Karthäuser1, Melanie Homberger2, Ulrich Simon2, and Rainer Waser1 — 1Institute of Solid State Research, Research Center Juelich GmbH, 52425 Juelich, Germany — 2Institute of Inorganic Chemistry, RWTH-Aachen, Landoltweg 1, 52056 Aachen, Germany
The ability to access and use the electronic properties of individual molecules together with the inherent capability of self-organization, promises new possibilities for future microelectronic circuits. On this way the behavior of electroactive molecules with redox-centers, like ferrocenes, is especially interesting. Here we report on the structure and electronic properties of mercaptoalkyl-ferrocene self-assembled monolayers, studied by STM and STS. The molecular structures of pure full coverage and of submonolayer-coverage phases of different mercaptoalkyl-ferrocenes in mixed layers with alkanethiols on Au(111) are resolved. The ferrocenes form striped surface pattern resulting in equally spaced rows of ferrocene moieties. The obtained nanoscale lattice of functional groups offers an interesting potential for patterning of periodic structures. Besides this the electronic behavior of mercaptoalkyl-ferrocenes is studied by STS, which allows a direct determination of the decay constant of the ferrocene moiety.
References: [1] L. Müller-Meskamp et al., JoP: CS 61, 852 (2007). [2] L. Müller-Meskamp et al., PSS(a) 203, 1448 (2006).