Type

Journal Article

Authors

Jonathan N Coleman
Gregg R Dieckmann
Damian Aherne
Alan R Dalton
Helen Cathcart
Valeria Nicolosi

Subjects

Chemistry

Topics
single walled carbon nanotubes spontaneous drug design peptides time scale nanotubes carbon chemistry surface active agents

Spontaneous exfoliation of single-walled carbon nanotubes dispersed using a designed amphiphilic peptide. (2008)

Abstract We have observed concentration dependent exfoliation of single-walled carbon nanotubes dispersed in solutions of the synthetic peptide nano-1. As the nanotube concentration is reduced, the bundle diameters tend to decrease before saturating at <2.0 nm for concentrations below 6 x 10(-3) mg/mL. The fraction of individual nanotubes increases with decreasing concentration, saturating at approximately 95% at low concentration. This concentration dependent exfoliation happens even if the dispersions are not sonicated on dilution, albeit over a longer time scale. The populations both of individual nanotubes and of bundles are much higher than expected at high concentrations, indicating the presence of repulsive internanotube interactions stabilizing the dispersions.
Collections Ireland -> Trinity College Dublin -> PubMed

Full list of authors on original publication

Jonathan N Coleman, Gregg R Dieckmann, Damian Aherne, Alan R Dalton, Helen Cathcart, Valeria Nicolosi

Experts in our system

1
Jonathan Coleman
Trinity College Dublin
Total Publications: 217
 
2
Valeria Nicolosi
Trinity College Dublin
Total Publications: 67