Stabilizing Edge Fluorination in Graphene Nanoribbons

Abstract

The on-surface synthesis of edge-functionalized graphene nanoribbons (GNRs) is challenged by the stability of the functional groups throughout the thermal reaction

Band structure modulation by methoxy-functionalization of graphene nanoribbons

“…A similar behavior, but with stronger effects on c1, has been reported for edge decoration with electron-withdrawing groups. 40,42,43 In addition to the modulation of the electronic properties, the DFT simulations indicate that the aromatic structure of GNR-OMe is slightly distorted by the introduction of multiple methoxy groups at the edges, due to the steric repulsion (Figure 1d). DFT simulations of a non-planar GNR-H with the same distortion as GNR-OMe, but without the methoxy groups (Figure 1b, violet) were then carried out to discern the effect of the electron-donating methoxy groups from that induced by the geometrical distortion.…”

Recent Advances in Fluorinated Graphene from Synthesis to Applications: Critical Review on Functional Chemistry and Structure Engineering

“…[9,[14][15][16] The powerful van der Waals force between graphene nanosheets and the lack of active groups on the surface lead to its poor dispersibility and processability. [13,[17][18][19] To solve these problems, various physicochemical modification methods have been employed, such as confined graphene nanoribbon, [20][21][22][23] graphene-based heterojunction, [24][25][26][27] and graphene derivatives engineering. [12,13] Fluorinated graphene (FG; CF x , x = 0-1.1) is achieved by covalently or ionically bonding fluorine atoms with a certain amount of carbon atoms in the graphene skeleton, which has obtained the increasing of attentions from synthesis from application (Scheme 1).…”

“…[ 9,14–16 ] The powerful van der Waals force between graphene nanosheets and the lack of active groups on the surface lead to its poor dispersibility and processability. [ 13,17–19 ] To solve these problems, various physicochemical modification methods have been employed, such as confined graphene nanoribbon, [ 20–23 ] graphene‐based heterojunction, [ 24–27 ] and graphene derivatives engineering. [ 12,13 ]…”

Edge Effect in Electronic and Transport Properties of 1D Fluorinated Graphene Materials

“…In addition to 2D fluorinated graphene, most recent experiments have shown the feasibility of 1D fluorinated graphene nanoribbons (GNRs) [ 20 , 21 ]. GNRs [ 22 , 23 , 24 ], the most generic form of graphene nano structures, are potential candidates for nano wires with tailored conductance properties.…”