Single-Molecule Conductance in a Series of Extended Viologen Molecules

0389037 - ÚFCH JH 2014 RIV US eng J - Článek v odborném periodiku
Kolivoška, Viliam - Valášek, Michal - Gál, Miroslav - Sokolová, Romana - Kocábová, Jana - Pospíšil, Lubomír - Mészáros, G. - Hromadová, Magdaléna
Single-Molecule Conductance in a Series of Extended Viologen Molecules.
Journal of Physical Chemistry Letters. Roč. 4, č. 4 (2013), s. 589-595. ISSN 1948-7185
Grant CEP: GA ČR GA203/09/0705; GA AV ČR IAA400400802; GA MŠMT(CZ) MEB041006
Institucionální podpora: RVO:61388955 ; RVO:61388963
Klíčová slova: single molecule conductance * extended viologens * electron transfer
Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
Impakt faktor: 6.687, rok: 2013

Single-molecule conductance in a series of extended viologen molecules was measured at room temperature using a gold−molecule−gold scanning tunneling microscopy break junction arrangement. Conductance values for individual molecules change from 4.8 ± 1.2 nS for the shortest compound to 2.9 ± 1.0 nS for the compound with six repeating units and length of 11 nm. The latter value is almost 3 orders of magnitude higher than that reported for all-carbon-based aromatic molecular wires of comparable length. On the basis of the length of the molecules, an attenuation factor of only 0.06 ± 0.004 nm-1 (0.006 ± 0.0004 Å-1) was obtained. To the best of our knowledge, this is the smallest value reported for the conductance attenuation in a series of molecular wires.
Trvalý link: http://hdl.handle.net/11104/0217937