Charge Transport in Single Oligophenylene Molecular Wires with Different Anchoring Groups

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F19%3A00505251" target="_blank" >RIV/61388955:_____/19:00505251 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Charge Transport in Single Oligophenylene Molecular Wires with Different Anchoring Groups

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Charge Transport in Single Oligophenylene Molecular Wires with Different Anchoring Groups

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/GA18-04682S" target="_blank" >GA18-04682S: Studium mechanismu transportu elektronů v jednotlivých molekulách pomocí vodivostních a termoelektrických měření.</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

XXXIX. Moderní elektrochemické metody. Sborník přednášek

ISBN

978-80-905221-7-6

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

96-99

Název nakladatele

Best Servis

Místo vydání

Ústí nad Labem

Místo konání akce

Jetřichovice

Datum konání akce

20. 5. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000583689900022