Force spectroscopy of iron tetraphenylporphyrin molecules with Cl tips

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F20%3A00539520" target="_blank" >RIV/68378271:_____/20:00539520 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1021/acs.jpcc.0c08894" target="_blank" >https://doi.org/10.1021/acs.jpcc.0c08894</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.jpcc.0c08894" target="_blank" >10.1021/acs.jpcc.0c08894</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Force spectroscopy of iron tetraphenylporphyrin molecules with Cl tips

Popis výsledku v původním jazyce

At low sample voltages, Cl ions may be bidirectionally transferred between a Fe tetraphenylporphyrin (FeTPP) molecule on Au(111) and the tip of a low-temperature scanning tunneling microscope that also operates as an atomic force microscope. Cl-terminated gold tips are prepared this way. Chlorinated and pristine metal tips are used to probe the forces and conductances of contacts to Au(111), FeTPP, and chlorinated FeTPP. The interaction between the substrate and the Cl ion at the tip may be modeled by a point charge interacting with its image. The maximal attraction experienced by the tip in junctions with one Cl ion is much larger when the ion is located at the molecule. Junctions with two Cl ions exhibit two maxima of the attractive force. Imaging with Cl tips reveals intriguing contrast changes that are tentatively interpreted in terms of tip-induced distortions of the molecules. Density functional theory calculations reproduce important aspects of the experimental data.

Název v anglickém jazyce

Force spectroscopy of iron tetraphenylporphyrin molecules with Cl tips

Popis výsledku anglicky

At low sample voltages, Cl ions may be bidirectionally transferred between a Fe tetraphenylporphyrin (FeTPP) molecule on Au(111) and the tip of a low-temperature scanning tunneling microscope that also operates as an atomic force microscope. Cl-terminated gold tips are prepared this way. Chlorinated and pristine metal tips are used to probe the forces and conductances of contacts to Au(111), FeTPP, and chlorinated FeTPP. The interaction between the substrate and the Cl ion at the tip may be modeled by a point charge interacting with its image. The maximal attraction experienced by the tip in junctions with one Cl ion is much larger when the ion is located at the molecule. Junctions with two Cl ions exhibit two maxima of the attractive force. Imaging with Cl tips reveals intriguing contrast changes that are tentatively interpreted in terms of tip-induced distortions of the molecules. Density functional theory calculations reproduce important aspects of the experimental data.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10301 - Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2020

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

124

Číslo periodika v rámci svazku

49

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

26889-26896

Kód UT WoS článku

000599610500037

EID výsledku v databázi Scopus

2-s2.0-85096615609