Does the Seebeck coefficient of a single-molecule junction depend on the junction configuration?

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00580138" target="_blank" >RIV/68378271:_____/21:00580138 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388955:_____/21:00544961

Výsledek na webu

<a href="https://doi.org/10.1039/d1ta05324h" target="_blank" >https://doi.org/10.1039/d1ta05324h</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d1ta05324h" target="_blank" >10.1039/d1ta05324h</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Does the Seebeck coefficient of a single-molecule junction depend on the junction configuration?

Popis výsledku v původním jazyce

A new experimental method based on dynamic switching between (thermo)electric and thermoelectric voltage measurements. Two model systems, 4,40-bipyridine (1) and 4,40 -diaminostilbene (2), have been scrutinized. Single-molecule conductance (G) and thermopower (S) values were obtained for the two most prob. junction config. of 1 and 2, each having two different conductance values, GH (high) and GL (low), where GH > GL. Thermopower values of S(GH) ¼ 6.4 1.5 mV K1 and S(GL) ¼ 7.0 1.6 mV K1 were obtained for the molecular junctions of 1 and values of S(GH) ¼ +14.4 3.5 mV K1 and S(GL) ¼ +10.4 3.0 mV K1 were obtained for the molecular junctions of 2. The GH and S(GH) values for 1 and 2 are consistent with previously reported results. Thermopower values obtained for both configurations of 2 during junction evolution are reported for the first time. This work shows that both S values are the same for each molecule and they do not depend on the molecular junction configuration.

Název v anglickém jazyce

Does the Seebeck coefficient of a single-molecule junction depend on the junction configuration?

Popis výsledku anglicky

A new experimental method based on dynamic switching between (thermo)electric and thermoelectric voltage measurements. Two model systems, 4,40-bipyridine (1) and 4,40 -diaminostilbene (2), have been scrutinized. Single-molecule conductance (G) and thermopower (S) values were obtained for the two most prob. junction config. of 1 and 2, each having two different conductance values, GH (high) and GL (low), where GH > GL. Thermopower values of S(GH) ¼ 6.4 1.5 mV K1 and S(GL) ¼ 7.0 1.6 mV K1 were obtained for the molecular junctions of 1 and values of S(GH) ¼ +14.4 3.5 mV K1 and S(GL) ¼ +10.4 3.0 mV K1 were obtained for the molecular junctions of 2. The GH and S(GH) values for 1 and 2 are consistent with previously reported results. Thermopower values obtained for both configurations of 2 during junction evolution are reported for the first time. This work shows that both S values are the same for each molecule and they do not depend on the molecular junction configuration.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Journal of Materials Chemistry A

ISSN

2050-7488

e-ISSN

2050-7496

Svazek periodika

9

Číslo periodika v rámci svazku

32

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

17512-17520

Kód UT WoS článku

000683040900001

EID výsledku v databázi Scopus

2-s2.0-85113145507