期刊
ADVANCED MATERIALS
卷 20, 期 10, 页码 1876-+出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.200702451
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Spontaneous exfoliation of single-walled carbon nanotubes on dilution of dispersions in a common solvent, N-methyl-pyrrolid one, 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.
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