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Title: Raman fingerprints of atomically precise graphene nanoribbons

Bottom-up approaches allow the production of ultranarrow and atomically precise graphene nanoribbons (GNRs) with electronic and optical properties controlled by the specific atomic structure. Combining Raman spectroscopy and ab initio simulations, we show that GNR width, edge geometry, and functional groups all influence their Raman spectra. As a result, the low-energy spectral region below 1000 cm–1 is particularly sensitive to edge morphology and functionalization, while the D peak dispersion can be used to uniquely fingerprint the presence of GNRs and differentiates them from other sp2 carbon nanostructures.
Authors:
 [1] ;  [2] ;  [2] ;  [2] ;  [3] ;  [3] ;  [3] ;  [4] ;  [4] ;  [4] ;  [5] ;  [3] ;  [4] ;  [6] ;  [7]
  1. Free Univ. of Berlin, Berlin (Germany)
  2. Univ. of Modena and Reggio Emilia, Modena (Italy); Nanoscience Institute of CNR, Modena (Italy)
  3. Max Planck Institute for Polymer Research, Mainz (Germany)
  4. Univ. of Cambridge, Cambridge (United Kingdom)
  5. Technische Univ. Dresden, Dresden (Germany)
  6. Free Univ. of Berlin, Berlin (Germany); Univ. of Manchester, Manchester (United Kingdom)
  7. Nanoscience Institute of CNR, Modena (Italy)
Publication Date:
OSTI Identifier:
1253054
Grant/Contract Number:
SC0012704
Type:
Published Article
Journal Name:
Nano Letters
Additional Journal Information:
Journal Volume: 16; Journal Issue: 6; Journal ID: ISSN 1530-6984
Publisher:
American Chemical Society
Research Org:
Nanoscience Inst. of CNR, Modena (Italy); Univ. of Manchester (United Kingdom)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; graphene; nanoribbons; Raman spectroscopy