title: An MCBJ case study: The influence of π-conjugation on the single-molecule conductance at a solid/liquid interface.
abstract: π-Conjugation plays an important role in charge transport through single molecular junctions. We describe in this paper the construction of a mechanically controlled break-junction setup (MCBJ) equipped with a highly sensitive log I-V converter in order to measure ultralow conductances of molecular rods trapped between two gold leads. The current resolution of the setup reaches down to 10 fA. We report single-molecule conductance measurements of an anthracene-based linearly conjugated molecule (AC), of an anthraquinone-based cross-conjugated molecule (AQ), and of a dihydroanthracene-based molecule (AH) with a broken conjugation. The quantitative analysis of complementary current-distance and current-voltage measurements revealed details of the influence of π-conjugation on the single-molecule conductance.
authors: Department of Chemistry and Biochemistry, University of Bern, Freiesstrasse 3, CH-3012, Bern, Switzerland.
authors: Wenjing
authors: W
authors: Hong
authors: Hennie
authors: H
authors: Valkenier
authors: Gábor
authors: G
authors: Mészáros
authors: David Zsolt
authors: DZ
authors: Manrique
authors: Artem
authors: A
authors: Mishchenko
authors: Alexander
authors: A
authors: Putz
authors: Pavel Moreno
authors: PM
authors: García
authors: Colin J
authors: CJ
authors: Lambert
authors: Jan C
authors: JC
authors: Hummelen
authors: Thomas
authors: T
authors: Wandlowski