Type

Journal Article

Authors

Anna Drury
Silvia Giordani
Werner Blau
Jonathan Coleman

Subjects

Chemistry

Topics
binding energy surface area solvent physical processes measurement single walled single wall carbon nanotubes physics

Effect of solvent and dispersant on the bundle dissociation of single-walled carbon nanotube (2005)

Abstract Single-wall carbon nanotubes (SWCNT) are severely restricted in their applications, as they exist in rope-like bundles. Recently, J. Coleman et al. demonstrated a spectroscopic method to monitor bundle dissociation in low concentration NT-polymer composites.1 The method relies on the measurement of the ratio of free-polymer to the nanotube-bound polymer in the SWCNT-polymer solutions via luminescent spectroscopy. A theory has been developed to transform this data into the bundle surface area, which is of course related to the bundle size. This method clearly shows that individual, isolated SWCNT are stable in low concentration dispersions. The main aim of this work is to better understanding of the physics behind polymer ? SWCNT interactions, the binding scheme, and the magnitude of the polymer ? SWCNT binding energy. In an effort to broaden the understanding of the physical processes governing the NT de-bundling a wide range of suitable polymers and short-chain molecules have been examined. We found a strong dependence of the concentration at which individual NTs become stable with the nature of the dispersant molecule
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Full list of authors on original publication

Anna Drury, Silvia Giordani, Werner Blau, Jonathan Coleman

Experts in our system

1
Silvia Giordani
Trinity College Dublin
Total Publications: 37
 
2
Werner Blau
Trinity College Dublin
Total Publications: 109
 
3
Jonathan Coleman
Trinity College Dublin
Total Publications: 217