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Temperature and length dependence of charge transport in redox-active molecular wires incorporating ruthenium (II) bis (σ-arylacetylide) complexes.

Abstract : Understanding of charge transport through org. or inorganometallic mol. wires is a central issue in mol. electronics. In particular, fundamental issues such as the mol. structure-transport relationships and the mol. length dependence must be addressed. We report the elec. transport behavior of a series of redox-active conjugated mol. wires (Ru1 - Ru3) as a function of temp. and mol. length. The mols. were self-assembled and their films were extensively characterized using cyclic voltammetry, ellipsometry, XPS, and IR spectroscopy. Their elec. properties were examd. by conducting probe at. force microscopy and crossed-wire junctions. At room temp., we find a very weak dependence of the wire resistance with mol. length (β = 0.09/Å), consistent with a high degree of electronic communication along the mol. backbone. In low temp. (5 K) expts., Coulomb blockade-like behavior was obsd. in junctions incorporating Ru3 whereas direct tunneling apparently occurs through Ru1 and Ru2. [on SciFinder(R)]
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-01475544
Contributor : Stéphane Rigaut <>
Submitted on : Thursday, February 23, 2017 - 6:07:30 PM
Last modification on : Thursday, March 5, 2020 - 2:06:36 PM

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  • HAL Id : hal-01475544, version 1

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Bongsoo Kim, Jeremy M. Beebe, Celine Olivier, Stéphane Rigaut, Daniel Touchard, et al.. Temperature and length dependence of charge transport in redox-active molecular wires incorporating ruthenium (II) bis (σ-arylacetylide) complexes.. Abstracts of Papers, 233rd ACS National Meeting, Chicago, IL, United States, March 25-29, 2007, 2007, Unknown, Unknown Region. pp.INOR--627. ⟨hal-01475544⟩

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