Název:
Charge Transport in Single Oligophenylene Molecular Wires with Different Anchoring Groups
Autoři:
Hromadová, Magdaléna ; Kolivoška, Viliam ; Šebera, Jakub ; Sebechlebská, Táňa ; Gasior, Jindřich ; Nováková Lachmanová, Štěpánka ; Mészáros, G. ; Lindner, M. ; Mayor, M. ; Valášek, M. Typ dokumentu: Příspěvky z konference Konference/Akce: Moderní elektrochemické metody /39./, Jetřichovice (CZ), 20190520
Rok:
2019
Jazyk:
eng
Abstrakt: 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.
Klíčová slova:
Single molecule conductance; STM break junction; Tetraphenylmethane Tripodal anchor Číslo projektu: GA18-04682S (CEP) Poskytovatel projektu: GA ČR Zdrojový dokument: XXXIX. Moderní elektrochemické metody. Sborník přednášek, ISBN 978-80-905221-7-6
Instituce: Ústav fyzikální chemie J. Heyrovského AV ČR
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Informace o dostupnosti dokumentu:
Dokument je dostupný na vyžádání prostřednictvím repozitáře Akademie věd. Původní záznam: http://hdl.handle.net/11104/0296735