Diameter-Selective Solubilization of Carbon Nanotubes by Lipid Micelles

Authors: Tasis, Dimitrios; Papagelis, Konstantinos; Douroumis, Dionysios; Smith, James R.; Bouropoulos, Nikolaos; Fatouros, Dimitrios G.

Source: Journal of Nanoscience and Nanotechnology, Volume 8, Number 1, January 2008 , pp. 420-423(4)

Publisher: American Scientific Publishers

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Abstract:

The one-step dispersion of HiPco single-walled carbon nanotubes in aqueous media with the use of a synthetic lyso-phosphatidylcholine was studied. Solubilization occurs through wrapping of lipid molecules around the circumference of the tubes, yielding lipid monolayers on the graphitic sidewalls as evidenced by atomic force microscopy imaging and dynamic light scattering measurements. Raman spectroscopy showed that the dispersion and centrifugation process leads to an effective enrichment of the stable aqueous suspension in carbon nanostructures with smaller diameters.

Keywords: LIPID MICELLES; SINGLE WALL CARBON NANOTUBES; RAMAN SPECTROSCOPY; ATOMIC FORCE MICROSCOPY; ZETA POTENTIAL

Document Type: Short communication

DOI: 10.1166/jnn.2008.104

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