Enhanced Raman scattering on functionalized graphene substrates

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F17%3A00482739" target="_blank" >RIV/61388955:_____/17:00482739 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1088/2053-1583/aa6b6e" target="_blank" >http://dx.doi.org/10.1088/2053-1583/aa6b6e</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/2053-1583/aa6b6e" target="_blank" >10.1088/2053-1583/aa6b6e</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Enhanced Raman scattering on functionalized graphene substrates

Popis výsledku v původním jazyce

The graphene-enhanced Raman scattering of Rhodamine 6G molecules on pristine, fluorinated and 4-nitrophenyl functionalized graphene substrates was studied. The uniformity of the Raman signal enhancement was studied by making large Raman maps. The relative enhancement of the Raman signal is demonstrated to be dependent on the functional groups, which was rationalized by the different doping levels of pristine, fluorinated and 4-nitrophenyl functionalized graphene substrates. The impact of the Fermi energy of graphene and the energy of molecular vibrations was considered together for the first time in order to explain the Raman signal enhancement. This approach enables to understand the enhancement of the Raman signal without any assumption about the uniformity of the molecules on the graphene surface and without a necessity to know the enhancement factor. The agreement between the theory and the experimental data was further demonstrated for varying excitation energy.

Název v anglickém jazyce

Enhanced Raman scattering on functionalized graphene substrates

Popis výsledku anglicky

The graphene-enhanced Raman scattering of Rhodamine 6G molecules on pristine, fluorinated and 4-nitrophenyl functionalized graphene substrates was studied. The uniformity of the Raman signal enhancement was studied by making large Raman maps. The relative enhancement of the Raman signal is demonstrated to be dependent on the functional groups, which was rationalized by the different doping levels of pristine, fluorinated and 4-nitrophenyl functionalized graphene substrates. The impact of the Fermi energy of graphene and the energy of molecular vibrations was considered together for the first time in order to explain the Raman signal enhancement. This approach enables to understand the enhancement of the Raman signal without any assumption about the uniformity of the molecules on the graphene surface and without a necessity to know the enhancement factor. The agreement between the theory and the experimental data was further demonstrated for varying excitation energy.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/GA15-01953S" target="_blank" >GA15-01953S: Nanokompozitní systémy plasmonických/magnetických nanočástic - grafenu - aromatických molekul pro zesílené Ramanské procesy</a><br>

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

2D Materials

ISSN

2053-1583

e-ISSN

—

Svazek periodika

4

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

—

Kód UT WoS článku

000400268100002

EID výsledku v databázi Scopus

2-s2.0-85021353693