Raman fingerprints of atomically precise graphene nanoribbons
  Bottom-up approaches allow the production of ultra-narrow 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. 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. 
Ivan A. Verzhbitskiy, Marzio De Corato, Alice Ruini, Elisa Molinari,   Akimitsu Narita, Yunbin Hu, Matthias Georg Schwab, M....
cond-mat.mes-hall