Interface Chemistry of Graphene/Cu Grafted By 3,4,5-Tri-Methoxyphenyl

Abstract

Chemical reaction with diazonium molecules has revealed to be a powerful method for the surface chemical modification of graphite, carbon nanotubes and recently also of graphene. Graphene electronic structure modification using diazonium molecules is strongly influenced by graphene growth and by the supporting materials. Here, carrying on a detailed study of core levels and valence band photoemission measurements, we are able to reconstruct the interface chemistry of trimethoxybenzenediazonium-based molecules electrochemically grafted on graphene on copper. The band energy alignment at the molecule-graphene interface has been traced revealing the energy position of the HOMO band with respect to the Fermi level.

Molecular Engineered Carbon-Based Sensor for Ultrafast and Specific Detection of Neurotransmitters

“…This bonding position reforms the planar structure of the pristine rGO and results in wrinkled-paper-like morphology as observed in the TEM (Figure ) and STM (Figure ) results. Our synthesized material shows a nearly uniform distribution of PAP molecule over the rGO surface as reported in an earlier work of Bueno et al and Ambrosio et al, where they have shown that the organic molecule with amine functional groups tends to form covalent linkage over the graphene/graphite structure at the basal plane. , …”

“…Our synthesized material shows a nearly uniform distribution of PAP molecule over the rGO surface as reported in an earlier work of Bueno et al and Ambrosio et al, where they have shown that the organic molecule with amine functional groups tends to form covalent linkage over the graphene/graphite structure at the basal plane. 74,75 In this unique functionalized rGO-PAP, the free hydroxyl terminal group acts as an interaction site for the biomolecules. There are two possible ways to adsorb and connect the DA molecule with the rGO-PAP surface, which can be represented as type-1 and type-2 hydrogen (H) bonds as shown in Figure S5.…”

Impact of covalent functionalization by diazonium chemistry on the electronic properties of graphene on SiC

“…5b and 5c) by following the procedure previously described. The recovery toward the initial energy position can be related to the molecule desorption that takes place at about 120°C 33,34 .…”

Improving the mechanical behavior of reduced graphene oxide/hydroxyapatite nanocomposites using gas injection into powders synthesis autoclave

“…Graphene sheets are as thick as a carbon atom. The atoms in the graphene structure are combined with the sp 2 hybrid [21][22][23] . The mechanical properties of graphene are very interesting, which include the elastic modulus of 1 TPa and the fracture strength of 130 GPa 24,25 .…”