Single Molecule Conductance of Electroactive Helquats: Solvent Effect

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F19%3A00518928" target="_blank" >RIV/61388955:_____/19:00518928 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388963:_____/19:00522777

Výsledek na webu

<a href="http://hdl.handle.net/11104/0303934" target="_blank" >http://hdl.handle.net/11104/0303934</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/celc.201901801" target="_blank" >10.1002/celc.201901801</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Single Molecule Conductance of Electroactive Helquats: Solvent Effect

Popis výsledku v původním jazyce

A series of helquat molecules with increasing number of rings n was studied by electrochemical and break junction methods to provide redox characteristics and single molecule conductance properties. Even though selected species do not contain anchoring groups the molecular junction conductance was observed experimentally and depends strongly on the solvent used. Single molecule conductance G is almost two orders of magnitude higher in water environment compared to mesitylene, whereas the distribution of G values is narrow in water and wide in mesitylene solvent. In the non-polar environment, G increases with increasing n, contrary to generally accepted notion of decreasing tunneling current with increasing molecular length. This behavior is, however, consistent with electrochemical properties, which showed that longer helquats are reduced more easily than the shorter ones. Furthermore, theoretical computations provided most probable molecular junction configurations of helquats in water solvent with excellent agreement between theoretical and experimental G values.

Název v anglickém jazyce

Single Molecule Conductance of Electroactive Helquats: Solvent Effect

Popis výsledku anglicky

A series of helquat molecules with increasing number of rings n was studied by electrochemical and break junction methods to provide redox characteristics and single molecule conductance properties. Even though selected species do not contain anchoring groups the molecular junction conductance was observed experimentally and depends strongly on the solvent used. Single molecule conductance G is almost two orders of magnitude higher in water environment compared to mesitylene, whereas the distribution of G values is narrow in water and wide in mesitylene solvent. In the non-polar environment, G increases with increasing n, contrary to generally accepted notion of decreasing tunneling current with increasing molecular length. This behavior is, however, consistent with electrochemical properties, which showed that longer helquats are reduced more easily than the shorter ones. Furthermore, theoretical computations provided most probable molecular junction configurations of helquats in water solvent with excellent agreement between theoretical and experimental G values.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

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 periodika

ChemElectroChem

ISSN

2196-0216

e-ISSN

—

Svazek periodika

6

Číslo periodika v rámci svazku

23

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

8

Strana od-do

5856-5863

Kód UT WoS článku

000505276800013

EID výsledku v databázi Scopus

2-s2.0-85077018658