Reduction and Functionalization of Graphene Oxide Sheets Using Biomimetic Dopamine Derivatives in One Step

Abstract

An easy and environmentally friendly chemical method for the simultaneous reduction and noncovalent functionalization of graphene oxide (GO) using dopamine derivatives is described. The reaction takes place at room temperature under ultrasonication of an aqueous suspension of GO and a dopamine derivative. X-ray photoelectron spectroscopy, FT-IR spectroscopy, and cyclic voltammetry characterizations revealed that the resulting material consists of graphene functionalized with the dopamine derivative. This one-step protocol is applied for simultaneous reduction and functionalization of graphene oxide with a dopamine derivative bearing an azide function. The chemical reactivity of the azide function was demonstrated by a postfunctionalization with ethynylferrocene using the Cu(I) catalyzed 1,3-dipolar cyloaddition.

Fusion of nacre, mussel, and lotus leaf: bio-inspired graphene composite paper with multifunctional integration

“…Furthermore, for the GC sample, the appearance of a new C-N peak at the binding energy at about 285.8 eV strongly demonstrated the presence of the polydopamine coating in the multifunctional GC paper. 37,38,41 The above ESEM, XRD, UV-vis, FT-IR, and XPS observations proved that GO is indeed reduced by dopamine and polydopamine is present in the GC paper.…”

“…5a): the C]O stretching vibration peak of carboxyl groups at 1729 cm À1 ; the aromatic C]C stretching vibration peak at 1621 cm À1 ; the O-H deformation vibration peak at 1395 cm À1 ; the C-OH stretching peak at 1220 cm À1 ; and the C-O stretching peak at 1049 cm À1 . [39][40][41] The disappearance of the typical C]O peak at 1729 cm À1 compared to original GO strongly demonstrated the reduction of GO to graphene by the reaction between carboxylic acid groups and amine groups (Fig. 5b).…”

“…[32][33][34][35] Among the wide variety of synthesis strategies, chemical reduction of GO using dopamine reagent is one of the most promising. [36][37][38][39][40][41] In such a process, dopamine acts simultaneously as a reducing agent in situ for GO and as a capping agent to stabilize and decorate the resultant graphene surface for further functionalization, owing to its fascinating properties (reduction, self-polymerization, and adhesion). Furthermore, dopamine can absorb on the graphene surface due to its excellent affinity.…”

Facile Synthesis and Characterization of Multi-Layer Graphene Growth on Co-Ni Oxide/Al2O3 Substrate Using Chemical Vapour Deposition

“…Its high specific surface area makes it appealing as a support for synthesis of metal based catalysts. Graphenesupported catalysts have been reported in reactions such as biomimetric oxidation, photocatalytic, decomposition of hydrous hydrazine, hydrogen production from silicon photocathode and enhanced electro-catalytic oxidation of methanol [16][17][18].…”

Epoxy resin reinforced with nanothin polydopamine-coated carbon nanotubes: a study of the interfacial polymer layer thickness

“…Lee et al [15] reported that the adhesive proteins secreted by mussels (PDA) can self-polymerize via a simple deposition process under alkaline conditions and attach the adhesive layer onto almost all types of surface, be it organic or inorganic. In the past years, a large amount of substrates have been functionalized with polydopamine, such as electrospun nanofibers [16][17][18] , clay [19][20][21] , carbon fiber [22] and graphene oxide [23][24][25] . As a non-covalent modification method, the PDA functionalization process has significant advantages, like high efficiency, ease of procedure, and mild reaction conditions, exclusive from concentrated acid and strong oxidation processes.…”