Chemical synthesis of graphene nanoribbons

Abstract

Dedicated to Professor Michael AbstractGraphene is a two-dimensional atom-thick sheet of graphite composed of an sp 2 -hybridized carbon atom network. Its isolation in 2004 and the extensive research that followed have led, amongst others, to graphene nanoribbons (GNRs), a graphene-based structure having nano-scale dimensions and semiconducting or metallic electronic properties that depend on its geometry and dimensions. These characteristics of GNRs are in stark contrast to those of graphene, which is a carbon sheet with semimetal, zero band gap characteristics. In the present article, we discuss the progress that has been reported towards producing GNRs with predefined dimensions, by using bottom-up chemical synthesis approaches.

Fundamental properties of alkali-intercalated bilayer graphene nanoribbons

“…Consequently, the largest bandgap could be found in the 3N structure. 7 Generally, GNRs have been successfully synthesized under the top-down and bottom-up schemes including the oxidation reaction, 8,9 chemical vapor deposition, [10][11][12] and unzipping carbon nanotubes. 13,14 However, roughness occurring at the ribbon edges during the synthesis process can reduce the mobility of GNRs because of the edge-scattering effects.…”