Towards Solutions of Single‐Walled Carbon Nanotubes in Common Solvents

作者：Shane D. Bergin, Valeria Nicolosi, Philip V. Streich, Silvia Giordani, Zhenyu Sun, Alan H. Windle, Peter Ryan, N. Peter P. Niraj, Z. Wang, Leslie Carpenter, Werner J. Blau, John J. Boland, James P. Hamilton, Jonathan N. Coleman · 发表于：Advanced Materials · 年份：2008 · DOI：10.1002/adma.200702451 · 被引用次数：353 · 研究领域：Carbon Nanotubes in Composites、Graphene research and applications、Nanopore and Nanochannel Transport Studies

Spontaneous exfoliation of single-walled carbon nanotubes on dilution of dispersions in a common solvent, N-methyl-pyrrolidone, is demonstrated. The free-energy of mixing is negative, confirming athermal solubility. Scanning tunneling microscopy measurements show physisorption of the solvent to the nanotube (see figure). Experiments, supported by a simple model, show that successful solvents for nanotubes are those with surface tensions close to that of graphite.