Beilstein J. Nanotechnol.2015,6, 1145–1157, doi:10.3762/bjnano.6.116
Monolayer Langmuir–Blodgett (LB) films of 1,4-bis(pyridin-4-ylethynyl)benzene (1) together with the “STMtouch-to-contact” method have been used to study the nature of metal–monolayer–metal junctions in which the pyridyl group provides the contact at both molecule–surface interfaces. Surface pressure vs
-aggregates. Scanning tunneling microscopy (STM), in particular the “STMtouch-to-contact” method, was used to determine the electrical properties of LB films of 1. From these STM studies symmetrical I–V curves were obtained. A junction conductance of 5.17 × 10−5 G0 results from the analysis of the
metal–monolayer–metal junctions prepared under a number of different conditions.
Keywords: Langmuir–Blodgett films; molecular electronics; STMtouch-to-contactmethod; Introduction
Molecular electronics, in which a single molecule or a single layer of molecules is oriented between two electrodes to
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Figure 1:
Chemical structure of 1,4-bis(pyridin-4-ylethynyl)benzene (1).