Preparation of Covalently Functionalized Graphene Using Residual Oxygen-Containing Functional Groups
Top Cited Papers
- 15 October 2010
- journal article
- Published by American Chemical Society (ACS) in ACS Applied Materials & Interfaces
- Vol. 2 (11), 3092-3099
- https://doi.org/10.1021/am100597d
Abstract
When fabricated by thermal exfoliation, graphene can be covalently functionalized more easily by applying a direct ring-opening reaction between the residual epoxide functional groups on the graphene and the amine-bearing molecules. Investigation by X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and transmission electron microscopy (TEM) all confirm that these molecules were covalently grafted to the surface of graphene. The resulting dispersion in an organic solvent demonstrated a long-term homogeneous stability of the products. Furthermore, comparison with traditional free radical functionalization shows the extent of the defects characterized by TEM and Raman spectroscopy and reveals that direct functionalization enables graphene to be covalently functionalized on the surface without causing any further damage to the surface structure. Thermogravmetric analysis (TGA) shows that the nondestroyed graphene structure provides greater thermal stability not only for the grafted molecules but also, more importantly, for the graphene itself, compared to the free-radical grafting method.Keywords
This publication has 51 references indexed in Scilit:
- The chemistry of graphene oxideChemical Society Reviews, 2009
- Liquid‐Phase Exfoliation of Graphite Towards Solubilized GraphenesSmall, 2009
- Porphyrin and Fullerene Covalently Functionalized Graphene Hybrid Materials with Large Nonlinear Optical PropertiesThe Journal of Physical Chemistry B, 2009
- Deoxygenation of Exfoliated Graphite Oxide under Alkaline Conditions: A Green Route to Graphene PreparationAdvanced Materials, 2008
- Approaching ballistic transport in suspended grapheneNature Nanotechnology, 2008
- Single Sheet Functionalized Graphene by Oxidation and Thermal Expansion of GraphiteChemistry of Materials, 2007
- Electronic Confinement and Coherence in Patterned Epitaxial GrapheneScience, 2006
- Graphite Oxide: Chemical Reduction to Graphite and Surface Modification with Primary Aliphatic Amines and Amino AcidsLangmuir, 2003
- Interpretation of Raman spectra of disordered and amorphous carbonPhysical Review B, 2000
- Miscibility and Interactions in Blends and Complexes of Poly(N-acryloyl-N‘-methylpiperazine) with Poly(p-vinylphenol)Macromolecules, 1999