Fluorescence from a single-molecule probe directly attached to a plasmonic STM tip

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00601118" target="_blank" >RIV/68378271:_____/24:00601118 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0358371" target="_blank" >https://hdl.handle.net/11104/0358371</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1038/s41467-024-53707-2" target="_blank" >10.1038/s41467-024-53707-2</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Fluorescence from a single-molecule probe directly attached to a plasmonic STM tip

Popis výsledku v původním jazyce

Here, the plasmonic tip of a scanning-tunneling microscope is functionalized with a single fluorescent molecule and is scanned on a plasmonic substrate. The tunneling current flowing through the tip-molecule-substrate junction generates emission of light corresponding to the fluorescence of the emission of the excited molecular anion suspended at the apex of the tip. The fluorescence of this molecular probe is recorded for tip-substrate nanocavities featuring different plasmonic resonances, for different tip-substrate distances and applied bias voltages, and on different substrates. We demonstrate that the width of the emission peak can be used as a probe of the exciton-plasmon coupling strength and that the energy of the emitted photons is governed by the molecule interactions with its environment. Additionally, we theoretically elucidate why the direct contact of the suspended molecule with the metallic tip does not totally quench the radiative emission of the molecule.

Název v anglickém jazyce

Fluorescence from a single-molecule probe directly attached to a plasmonic STM tip

Popis výsledku anglicky

Here, the plasmonic tip of a scanning-tunneling microscope is functionalized with a single fluorescent molecule and is scanned on a plasmonic substrate. The tunneling current flowing through the tip-molecule-substrate junction generates emission of light corresponding to the fluorescence of the emission of the excited molecular anion suspended at the apex of the tip. The fluorescence of this molecular probe is recorded for tip-substrate nanocavities featuring different plasmonic resonances, for different tip-substrate distances and applied bias voltages, and on different substrates. We demonstrate that the width of the emission peak can be used as a probe of the exciton-plasmon coupling strength and that the energy of the emitted photons is governed by the molecule interactions with its environment. Additionally, we theoretically elucidate why the direct contact of the suspended molecule with the metallic tip does not totally quench the radiative emission of the molecule.

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

2024

Kód důvěrnosti údajů

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

Název periodika

Nature Communications

ISSN

2041-1723

e-ISSN

2041-1723

Svazek periodika

15

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

9733

Kód UT WoS článku

001352879700004

EID výsledku v databázi Scopus

2-s2.0-85209481505