Synthesis and characterization of carbon nanotubes covalently functionalized with amphiphilic polymer coated superparamagnetic nanocrystals
Journal
Journal of Colloid and Interface Science
Journal Volume
383
Journal Issue
1
Start Page
110
End Page
117
ISSN
10957103
Date Issued
2012
Author(s)
Bear, Joseph C.
McNaughter, Paul D.
Jurkschat, Kerstin
Crossley, Alison
Compton, Richard G.
Mayes, Andrew G.
Wildgoose, Gregory G.
Abstract
Herein, we report the synthesis of three covalently linked superparamagnetic nanocrystal-multi-walled carbon nanotube (MWCNT) composites. A generic strategy for amphiphilic polymer coating of nanocrystals and further functionalization for amide bond formation with the MWCNTs is discussed. This approach can in principle allow attachment of any colloidal nanocrystal to the MWCNTs. The materials were characterized at each stage of the syntheses using DLS, zeta-potential measurements, FT-IR, TEM, and XPS techniques. The practicality of this linkage is demonstrated by the reversible magnetic immobilization of these materials on an electrode during non-aqueous electrochemistry. © 2012 Elsevier Inc.
Subjects
Carbon nanotubes
Chemical modification
Magnetic nanotubes
Polymer coating
Superparamagnetic nanoparticles
Voltammetry
Type
journal article