The Raman profiles are similar among the different systems with varying levels of functionalization (Figure ). However, different sheet regions within the same sample present a defined variation in Raman profile, with increased defects contiguous with the edges. The Raman maps in Figure demonstrate this phenomenon in more detail, by comparing the distribution of intensities of graphene's fingerprint bands related to the primary mode representing the planar configuration sp bonded carbon (G band), the defect band representing a ring breathing mode from sp carbon rings (D band) and the second order of the D-band (2D band). By observing the difference in the distribution of color intensities of the D, G, and 2D maps, the reduced defects at the basal plane can be clearly evidenced.