Beilstein J. Org. Chem.2015,11, 1068–1078, doi:10.3762/bjoc.11.120
theoretical calculations. To the best of our knowledge, these are the first reported single-molecule conductance measurements on a molecular charge-transfer species.
Keywords: breakjunctionmeasurements; charge-transfer complex; DFT-based transport; molecular electronics; tetrathiafulvalene; Introduction
similar to the oxidation peak found for pristine exTTF (Epa = 244 mV, ΔE = 350 mV) (Figure 2).
Breakjunctionmeasurements
Neutral molecule
We first tried to form neutral-molecule molecular junctions. Simply, compound 5 can be seen as an analogue of an oligo(phenylene ethynylene), specifically an OPE3
methanol (see Supporting Information File 1, Figure S2). Specifically, we observe three peaks at 689 nm, 764 nm and 867 nm, which can be assigned to the radical anion F4TCNQ species [30]. For the breakjunctionmeasurements, it was necessary to avoid having an excess of the acceptor because F4TCNQ forms
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Graphical Abstract
Figure 1:
Depictions of 9,10-bis(1,3-dithiol-2-ylidene)-9,10-dihydroanthracene (exTTF) in the (a) neutral for...