Structural and electronic properties of self-assembled supramolecular grid structures: Doping of supramolecular thin films
Hassmann J, Hahn CY, Waldmann O, Volz E, Schleemilch HJ, Hallschmid N, Müller P, Hanan GS, Volkmer D, Schubert US, Lehn JM, Mauser H, Hirsch A, Clark T (1998)
Publication Type: Journal article
Publication year: 1998
Journal
Original Authors: Hassmann J., Hahn C.Y., Waldmann O., Volz E., Schleemilch H.-J., Hallschmid N., Mueller P., Hanan G.S., Volkmer D., Schubert U.S., Lehn J.-M., Mauser H., Hirsch A., Clark T.
Publisher: Materials Research Society
City/Town: Warrendale, PA, United States
Book Volume: 488
Pages Range: 447-452
Event location: Boston, MA, USA
URI: https://www.scopus.com/record/display.uri?eid=2-s2.0-17144462000&origin=inward
Abstract
Thin films of self-assembled supramolecular grid structures were prepared by electrochemical deposition. The surface structure of the films was determined by electrochemical in-situ scanning tunneling microscopy (STM), revealing ordered monolayers of the grid molecules on a Au(111) surface. The electronic structure of the films was studied by photoelectron spectroscopy. The thin films show semiconducting behavior with an insulating gap of ca. 2.5 eV. The size of insulating gap can be reduced to 0.5 eV by doping the films with additional Cd ions, which is in agreement with molecular orbital calculations. Additionally, conductivity measurements were performed. By doping of the thin films, their conductivity could be increased by several orders of magnitude. This is due to additional electronic states in the insulating HOMO-LUMO gap, which is confirmed by UPS measurements.
Authors with CRIS profile
Paul Müller
Naturwissenschaftliche Fakultät
Andreas Hirsch
Lehrstuhl für Organische Chemie II
Timothy Clark
Computer-Chemie-Centrum
Involved external institutions
France (FR)How to cite
APA:
Hassmann, J., Hahn, C.Y., Waldmann, O., Volz, E., Schleemilch, H.-J., Hallschmid, N.,... Clark, T. (1998). Structural and electronic properties of self-assembled supramolecular grid structures: Doping of supramolecular thin films. Materials Research Society Symposium - Proceedings, 488, 447-452.
MLA:
Hassmann, Jörg, et al. "Structural and electronic properties of self-assembled supramolecular grid structures: Doping of supramolecular thin films." Materials Research Society Symposium - Proceedings 488 (1998): 447-452.
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