Figure 4: Optical properties of chlorinated nanographenes.
From: Atomically precise edge chlorination of nanographenes and its application in graphene nanoribbons
(a) Ultraviolet–visible–near-infrared spectra of 1–7 were acquired in toluene. The respective spectra are indicated by the corresponding Arabic numeral of the chlorinated nanographenes. (b) The calculated and experimental highest occupied molecular orbital–lowest unoccupied molecular orbital (HOMO–LUMO) gaps of 1–7 are represented by green squares and black triangles, and those of their hydrogen-terminated counterparts are represented by blue squares and red triangles, respectively.
