Tuning Charge Transport Properties of Asymmetric Molecular Junctions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F17%3A00476030" target="_blank" >RIV/61388955:_____/17:00476030 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1021/acs.jpcc.7b01105" target="_blank" >http://dx.doi.org/10.1021/acs.jpcc.7b01105</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.jpcc.7b01105" target="_blank" >10.1021/acs.jpcc.7b01105</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Tuning Charge Transport Properties of Asymmetric Molecular Junctions

Popis výsledku v původním jazyce

Charge transport characteristics of asymmetric :molecules containing a 9,9 '-spirobitluorene platform coupled covalently to a phenylene ethynylene linker capped with either a thiol or a nitrile end group are investigated by break junction techniques. It is shown that the platform provides very good electronic coupling with metallic leads and the differences in the charge transport depend solely on the type of the anchoring group at the opposite end of the molecule. The SH-terminated molecule has 1 order of magnitude higher conductance compared to the CN-terminated one, and the charge transport path depends on the end,group utilized. By a combined :experimental break junction techniques and theoretical DFT calculations, it was demonstrated that in molecules containing SH- terminated phenylene ethynylene Wire attached to the 9,9 '-spirobifluorerie platform the charge is transported through fluorene unit and covalently coupled :phenylene ethynylene linker.' For CN-terminated molecules charge is transported through the thiolate termini olthe 9,9 '-spirobifluorene tripod. These :studies demonstrate the potential of spinbifluorene platform for the bottom-up approach to Molecular architectures by its immobilization with all three thiol groups to one of the electrodes without compromising,charge transport via the conjugated backbone.

Název v anglickém jazyce

Tuning Charge Transport Properties of Asymmetric Molecular Junctions

Popis výsledku anglicky

Charge transport characteristics of asymmetric :molecules containing a 9,9 '-spirobitluorene platform coupled covalently to a phenylene ethynylene linker capped with either a thiol or a nitrile end group are investigated by break junction techniques. It is shown that the platform provides very good electronic coupling with metallic leads and the differences in the charge transport depend solely on the type of the anchoring group at the opposite end of the molecule. The SH-terminated molecule has 1 order of magnitude higher conductance compared to the CN-terminated one, and the charge transport path depends on the end,group utilized. By a combined :experimental break junction techniques and theoretical DFT calculations, it was demonstrated that in molecules containing SH- terminated phenylene ethynylene Wire attached to the 9,9 '-spirobifluorerie platform the charge is transported through fluorene unit and covalently coupled :phenylene ethynylene linker.' For CN-terminated molecules charge is transported through the thiolate termini olthe 9,9 '-spirobifluorene tripod. These :studies demonstrate the potential of spinbifluorene platform for the bottom-up approach to Molecular architectures by its immobilization with all three thiol groups to one of the electrodes without compromising,charge transport via the conjugated backbone.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

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

Název periodika

Journal of Physical Chemistry C

ISSN

1932-7447

e-ISSN

—

Svazek periodika

121

Číslo periodika v rámci svazku

23

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

12885-12894

Kód UT WoS článku

000403731700043

EID výsledku v databázi Scopus

2-s2.0-85021665682