Chromatographic Separation of Single Wall Carbon Nanotubes

Published

October 16, 2008

Author(s)

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

Abstract

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

Undefined

Conference Title

MRS Proceedings

Pub Type

Conferences

Keywords

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

Citation

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 October 27, 2025)