title: Post-synthesis alignment of chemically modified carbon nanotubes in magnetic fields.
abstract: In this paper we present an improved procedure to prepare carbon nanotubes bundles functionalized with magnetite nanoparticles. Carbon nanotubes (CNTs) have been modified by hydrophobic adsorption of a carboxylic acid derivative and the previously synthesized magnetite nanoparticles have been attached to the acid groups. Electron microscopy studies show a high density of magnetite nanoparticles on the surface of CNTs. These modified carbon nanotubes become magnetic and can be appropriately oriented by using external magnetic fields.
authors.affiliation: Departamento de Física Aplicada, C-XII, Universidad Autónoma de Madrid, Cantoblanco, 28049 Madrid, Spain.
authors.forename: F
authors.initials: F
authors.lastname: Marquez
authors.forename: C
authors.initials: C
authors.lastname: Morant
authors.forename: J M
authors.initials: JM
authors.lastname: Sanz
authors.forename: E
authors.initials: E
authors.lastname: Elizalde