Figure 2: Comparison of GNRs and intermediate reaction products.
From: Large-scale solution synthesis of narrow graphene nanoribbons
(a) Photoluminescence spectra of the molecule 3, polymer 4 and GNRs 5; spectrum 3 is magnified by factor 3 for clarity. The top inset shows 5 ml vials with all three products; the bottom inset shows 5 ml vials with 0.167 mg ml−1 dispersions of the same products in DCM, irradiated from the back by a 365 nm ultraviolet lamp; numbers on the vials correspond to the numbers in Fig. 1c. (b) 13C NMR spectra for the polymer 4 and GNRs 5. (c) Atomic structures and corresponding STM images of a polymer 4 and a GNR 5 deposited on an Au (111) single crystal. Scale bars, 3 nm. (d) STM image of another GNR 5 on Au (111). Scale bar, 3 nm.
