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Colloidal stability of carbon nanotubes in an aqueous solution of phospholipids

Colloidal stability of carbon nanotubes in an aqueous solution of phospholipids

Douroumis, Dionysios, Fatouros, Dimitrios G., Bouropoulos, Nikolaos, Papagelis, Konstas and Tasis, Dimitrios (2007) Colloidal stability of carbon nanotubes in an aqueous solution of phospholipids. International Journal of Nanomedicine, 2 (4). pp. 761-766. ISSN 1178-2013 (doi:10.2147/IJN.S)

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Abstract

Within the family of nanomaterials, carbon nanotubes (CNTs) have emerged as a new effi cient scaffold for studying molecular interactions at interfaces. Poor dispersability of CNTs in any solvent presents a considerable drawback for the development of novel functional composite structures. Previous studies have demonstrated that the solubility of CNTs can be greatly enhanced by employing appropriate surfactants, some of them being biological molecules. In this work, we study the noncovalent wrapping of lipid chains onto the graphitic surface of single-walled material (SWCNTs) by electron microscopy and Raman spectroscopy. Stable and homogenous aqueous suspensions of SWCNTs in the presence of lipids have been prepared, whereas their electrophoretic mobility was confirmed by ζ-potential measurements. Raman measurements revealed that smaller diameter SWCNTs are preferentially dispersed by lipid molecules in the aqueous supernatant part of the prepared suspension.

Item Type: Article
Uncontrolled Keywords: carbon nanotubes, liposomes, drug delivery systems, Raman spectroscopy, ζ-potential
Subjects: T Technology > TP Chemical technology
Faculty / Department / Research Group: Faculty of Engineering & Science > Department of Pharmaceutical, Chemical & Environmental Sciences
Related URLs:
Last Modified: 09 Dec 2016 15:40
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/6411

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