Original title: Charge Transport in Single Oligophenylene Molecular Wires with Different Anchoring Groups
Authors: Hromadová, Magdaléna ; Kolivoška, Viliam ; Šebera, Jakub ; Sebechlebská, Táňa ; Gasior, Jindřich ; Nováková Lachmanová, Štěpánka ; Mészáros, G. ; Lindner, M. ; Mayor, M. ; Valášek, M.
Document type: Papers
Conference/Event: Moderní elektrochemické metody /39./, Jetřichovice (CZ), 20190520
Year: 2019
Language: eng
Abstract: This work compares single molecule conductance measurements of selected organic systems containing identical oligophenylene molecular wires and different tripodal anchoring groups. Single molecule conductance G was obtained by a scanning tunneling microscopy break junction technique complemented by theoretical calculations based on the density functional theory and non-equilibrium Green’s function formalism. Two molecules were compared where the same oligophenylene wire is connected to one of the electrodes via a tripod substituted on each leg by a thiol group either in the meta or para position. By combined experimental and theoretical analysis it was possible to confirm that single molecule conductance in the metal-molecule-metal junction of both molecules corresponds to a fully extended molecular wire, which is attached to one of the electrodes by all three thiolate bonds of the tripod. Experimental results confirmed that G value of meta-connected molecules is lower than that of para, whereas junction formation probability was higher for meta functionalization.
Keywords: Single molecule conductance; STM break junction; Tetraphenylmethane Tripodal anchor
Project no.: GA18-04682S (CEP)
Funding provider: GA ČR
Host item entry: XXXIX. Moderní elektrochemické metody. Sborník přednášek, ISBN 978-80-905221-7-6

Institution: J. Heyrovsky Institute of Physical Chemistry AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0296769

Permalink: http://www.nusl.cz/ntk/nusl-395985


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Research > Institutes ASCR > J. Heyrovsky Institute of Physical Chemistry
Conference materials > Papers
 Record created 2019-06-11, last modified 2019-06-11


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