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Small Angle Neutron Scattering from Labeled Single Wall Carbon Nanotubes

Published

Author(s)

Barry J. Bauer, Erik K. Hobbie, Matthew Becker

Abstract

Small angle neutron scattering (SANS) is used with the high concentration method to extract single particle scattering from single wall carbon nanotubes (SWNTs). The SWNT material was labeled by covalently attaching -C4H9 or -C4D9 groups by use of free radical chemistry. Mixtures of SWNT-C4H9 and SWNT-C4D9 were dispersed in D2O containing 1 % sodium lauryl sulfate-d25 (SLS) by use of sonication. SLS matches the neutron contrast of D2O so that all of the SANS is due to the labeled SWNT. Thermogravimetric analysis shows that mass fractions of butyl groups attached to the SWNT-C4H9 and the SWNT-C4D9 were well matched. The single particle scattering had a power law of 2.5, which is characteristic of a particle made of clustered SWNTs. The clustering seen in SWNT scattering is due to collections of SWNTs that do not exchange in a dynamic equilibrium with other nanotubes.
Citation
Nanotechnology
Volume
39

Keywords

carbon nanotubes, covalent attachment, deuterium labeling, neutron scattering, sans, swnt

Citation

Bauer, B. , Hobbie, E. and Becker, M. (2006), Small Angle Neutron Scattering from Labeled Single Wall Carbon Nanotubes, Nanotechnology, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=852553 (Accessed April 17, 2024)
Created January 1, 2006, Updated February 19, 2017