Figure 5: Chlorination of bottom-up synthetic GNRs.
From: Atomically precise edge chlorination of nanographenes and its application in graphene nanoribbons
(a) Scheme of chlorination of bottom-up synthetic GNRs. (b) Infrared spectrum of GNRs shows the vibrations of the tert-butyl group at 2,953, 1,364 and 866 cm−1. (c) Infrared spectrum of chlorinated GNRs shows the vibration peaks of C=C in chlorinated aromatic carbon at 1,299 and 1,225 cm−1 and vibration peaks of C–Cl bonds at 810, 770 and 608 cm−1. (d) C 1s XPS of chlorinated GNRs. The XPS signal of C 1 s at 284.6 and 285.9 eV. (e) Cl 2p XPS of chlorinated GNRs. The Cl 2p peaks at 200.2 eV (2p3/2) and 201.8 eV (2p1/2). (f) Ultraviolet–visible–near-infrared spectra of GNRs (blue) and chlorinated GNRs (red) in 1,2,4-trichlorobenzene (TCB). Insert images are photos of GNRs and chlorinated GNRs solution in TCB, respectively.
