Solution Phase Production of Graphene with Controlled Thickness via Density Differentiation
Top Cited Papers
- 25 September 2009
- journal article
- letter
- Published by American Chemical Society (ACS) in Nano Letters
- Vol. 9 (12) , 4031-4036
- https://doi.org/10.1021/nl902200b
Abstract
Graphene flakes with controlled thicknesses are isolated in solution using density gradient ultracentrifugation. These stable graphene dispersions are produced using the bile salt sodium cholate, which promotes graphite exfoliation and results in graphene−surfactant complexes having buoyant densities that vary with graphene thickness. The sorted graphene flakes are characterized using atomic force microscopy and Raman spectroscopy. Graphene dispersions produced using density differentiation offer superior performance in transparent conductors than those produced using conventional sedimentation-based centrifugation techniques.This publication has 38 references indexed in Scilit:
- Graphene: Status and ProspectsScience, 2009
- Large-scale pattern growth of graphene films for stretchable transparent electrodesNature, 2009
- Large Area, Few-Layer Graphene Films on Arbitrary Substrates by Chemical Vapor DepositionNano Letters, 2008
- Highly conducting graphene sheets and Langmuir–Blodgett filmsNature Nanotechnology, 2008
- Measurement of the Elastic Properties and Intrinsic Strength of Monolayer GrapheneScience, 2008
- Ultrahigh electron mobility in suspended grapheneSolid State Communications, 2008
- Graphene-Based Liquid Crystal DeviceNano Letters, 2008
- Graphene-based composite materialsNature, 2006
- Electronic Confinement and Coherence in Patterned Epitaxial GrapheneScience, 2006
- Two-dimensional atomic crystalsProceedings of the National Academy of Sciences, 2005