Large scale chemical functionalization of locally curved graphene with nanometer resolution

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F20%3A00534512" target="_blank" >RIV/61388955:_____/20:00534512 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/20:10412334

Výsledek na webu

<a href="http://hdl.handle.net/11104/0312697" target="_blank" >http://hdl.handle.net/11104/0312697</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.carbon.2020.04.006" target="_blank" >10.1016/j.carbon.2020.04.006</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Large scale chemical functionalization of locally curved graphene with nanometer resolution

Popis výsledku v původním jazyce

Anchoring various functional groups to graphene is the most versatile approach for tailoring its functional properties. To date, one must use a special tunneling microscope for attaching a molecule at a specific position on the graphene with resolution better than several hundred nanometers, however, achieving this resolution is impossible on a large scale. We demonstrate for the first time that chemical functionalization can be achieved with nanometer resolution by introducing strain with nanometer scale modulation into a graphene layer. The spatial distribution of the strain has been achieved by transferring a single-layer graphene (SLG) onto a substrate decorated by a few nm large nanoparticles (NPs). By changing the number of NPs on the substrate, the amount of locally strained SLG increases, as confirmed by atomic force microscopy (AFM) and Raman spectroscopy investigations. We further carried out hydrogenation and fluorination on the SLG with increasing amount of nanoscale corrugations. Raman spectroscopy, AFM and X-ray photoelectron spectroscopy revealed unambiguously that the level of functionalization increases proportionally with the number of NPs, which means an increasing number of the locally strained SLG. Our approach thus enables control of the amount and the position of functional groups on graphene with nanometer resolution. (C) 2020 The Authors. Published by Elsevier Ltd.

Název v anglickém jazyce

Large scale chemical functionalization of locally curved graphene with nanometer resolution

Popis výsledku anglicky

Anchoring various functional groups to graphene is the most versatile approach for tailoring its functional properties. To date, one must use a special tunneling microscope for attaching a molecule at a specific position on the graphene with resolution better than several hundred nanometers, however, achieving this resolution is impossible on a large scale. We demonstrate for the first time that chemical functionalization can be achieved with nanometer resolution by introducing strain with nanometer scale modulation into a graphene layer. The spatial distribution of the strain has been achieved by transferring a single-layer graphene (SLG) onto a substrate decorated by a few nm large nanoparticles (NPs). By changing the number of NPs on the substrate, the amount of locally strained SLG increases, as confirmed by atomic force microscopy (AFM) and Raman spectroscopy investigations. We further carried out hydrogenation and fluorination on the SLG with increasing amount of nanoscale corrugations. Raman spectroscopy, AFM and X-ray photoelectron spectroscopy revealed unambiguously that the level of functionalization increases proportionally with the number of NPs, which means an increasing number of the locally strained SLG. Our approach thus enables control of the amount and the position of functional groups on graphene with nanometer resolution. (C) 2020 The Authors. Published by Elsevier Ltd.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

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

Carbon

ISSN

0008-6223

e-ISSN

—

Svazek periodika

164

Číslo periodika v rámci svazku

AUG 2020

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

207-214

Kód UT WoS článku

000536478300007

EID výsledku v databázi Scopus

2-s2.0-85083033098