Bottom-up approaches exploiting on-surface synthesis reactions allow atomic-scale precision in the fabrication of graphene nanoribbons (GNRs); this is essential for their technological applications since their unique electronic and optical properties are largely controlled by the specific edge structure. By means of a combined experimental-theoretical investigation of some prototype GNRs, we show here that high-resolution electron energy-loss spectroscopy (HREELS) can be successfully employed to fingerprint the details of the GNR edge structure. In particular, we demonstrate how the features of HREEL vibrational spectra-mainly dictated by edge CH out-of-plane modes-are unambiguously related to the GNR edge structure. Moreover, we single out those modes which are localized at the GNR termini and show how their relative intensity can be related to the average GNR length.

Vibrational signature of the graphene nanoribbon edge structure from high-resolution electron energy-loss spectroscopy / Cavani, N.; De Corato, M.; Ruini, A.; Prezzi, D.; Molinari, E.; Lodi Rizzini, A.; Rosi, A.; Biagi, R.; Corradini, V.; Wang, X. -Y.; Feng, X.; Narita, A.; Mullen, K.; De Renzi, V.. - In: NANOSCALE. - ISSN 2040-3364. - 12:38(2020), pp. 19681-19688. [10.1039/d0nr05763k]

Vibrational signature of the graphene nanoribbon edge structure from high-resolution electron energy-loss spectroscopy

Cavani N.;De Corato M.;Ruini A.;Prezzi D.;Molinari E.;Lodi Rizzini A.;Rosi A.;Biagi R.;Corradini V.;De Renzi V.
2020-01-01

Abstract

Bottom-up approaches exploiting on-surface synthesis reactions allow atomic-scale precision in the fabrication of graphene nanoribbons (GNRs); this is essential for their technological applications since their unique electronic and optical properties are largely controlled by the specific edge structure. By means of a combined experimental-theoretical investigation of some prototype GNRs, we show here that high-resolution electron energy-loss spectroscopy (HREELS) can be successfully employed to fingerprint the details of the GNR edge structure. In particular, we demonstrate how the features of HREEL vibrational spectra-mainly dictated by edge CH out-of-plane modes-are unambiguously related to the GNR edge structure. Moreover, we single out those modes which are localized at the GNR termini and show how their relative intensity can be related to the average GNR length.
12
38
19681
19688
Vibrational signature of the graphene nanoribbon edge structure from high-resolution electron energy-loss spectroscopy / Cavani, N.; De Corato, M.; Ruini, A.; Prezzi, D.; Molinari, E.; Lodi Rizzini, A.; Rosi, A.; Biagi, R.; Corradini, V.; Wang, X. -Y.; Feng, X.; Narita, A.; Mullen, K.; De Renzi, V.. - In: NANOSCALE. - ISSN 2040-3364. - 12:38(2020), pp. 19681-19688. [10.1039/d0nr05763k]
Cavani, N.; De Corato, M.; Ruini, A.; Prezzi, D.; Molinari, E.; Lodi Rizzini, A.; Rosi, A.; Biagi, R.; Corradini, V.; Wang, X. -Y.; Feng, X.; Narita, A.; Mullen, K.; De Renzi, V.
File in questo prodotto:
File Dimensione Formato  
d0nr05763k.pdf

non disponibili

Tipologia: Versione pubblicata dall'editore
Dimensione 1.38 MB
Formato Adobe PDF
1.38 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1226057
Citazioni
  • ???jsp.display-item.citation.pmc??? 0
  • Scopus 2
  • ???jsp.display-item.citation.isi??? 2
social impact