Topography and Transport Properties of Oligo(phenylene ethynylene) Molecular Wires Studied by Scanning Tunneling Microscopy
Authors: Geetha R. Dholakia; Wendy Fan; Jessica Koehne; Jie Han; M. Meyyappan
Source: Journal of Nanoscience and Nanotechnology, Volume 3, Number 3, June 2003 , pp. 231-234(4)
Publisher: American Scientific Publishers
Abstract:Conjugated phenylene(ethynylene) molecular wires are of interest as potential candidates for molecular electronic devices. Scanning tunneling microscopic study of the topography and current-voltage (I-V) characteristics of self-assembled monolayers of two types of molecular wires are presented here. The study shows that the topography and I-Vs, for small scan voltages, of the two wires are quite similar and that the electronic and structural changes introduced by the substitution of an electronegative N atom in the central phenyl ring of these wires does not significantly alter the self-assembly or the transport properties.
Document Type: Research article
Publication date: 2003-06-01
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