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Chromatographic Separation of Single Wall Carbon Nanotubes



Barry J. Bauer, Vardhan Bajpai, Jeffrey Fagan, Matthew Becker, Erik K. Hobbie


Size exclusion chromatography (SEC) has been used to separate single wall carbon nanotubes (SWNT) dispersed by chemical modification in organic solvents and by DNA in aqueous solution. The chromatographic detection includes size sensitive detectors, multi-angle light scattering (MALS) and intrinsic viscosity (IV), which can provide information on the size and shape of the SEC fractions. The dispersions were also characterized by small angle neutron scattering (SANS) and atomic force microscopy (AFM). Chemical modification was accomplished by covalent attachment of octadecyl amine to acid treated SWNT and by covalent attachment of butyl groups through free radical grafting. Both covalent attachment methods produced dispersions that contained impurities or clusters of SWNT. The DNA dispersions produced the best dispersions, being predominately single nanotubes.
Proceedings Title
MRS Spring Meeting 2006 | | Materials Research Society Symposium Proceedings | MRS
Conference Dates
April 17-21, 2006
Conference Location
Conference Title
MRS Proceedings


dispersion, DNA, intrinsic viscosity, single wall carbon nanotube, size exclusion chromatography


Bauer, B. , Bajpai, V. , Fagan, J. , Becker, M. and Hobbie, E. (2008), Chromatographic Separation of Single Wall Carbon Nanotubes, MRS Spring Meeting 2006 | | Materials Research Society Symposium Proceedings | MRS, Undefined (Accessed April 19, 2024)
Created October 16, 2008