Dye Assisted Separation of Single Wall Carbon Nanotubes

Authors: Liu, Cai-Hong; Liu, Yi-Yang; Zhang, Yong-Hui; Wei, Rui-Rui; Li, Jun-Jie; Zhang, Hao-Li; Li, Bing-Rui

Source: Journal of Nanoscience and Nanotechnology, Volume 9, Number 2, February 2009 , pp. 1254-1257(4)

Publisher: American Scientific Publishers

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In this work, we demonstrate a simple and reliable method for selectively separating single wall carbon nanotubes (SWNTs). This method is based on a preferable adsorption of linear polynuclear aromatic dyes on metallic SWNTs. With different adsorption amount of soluble dyes, the metallic and semconducting SWNTs show different solubility in solvents, hence can be separated. The types of the obtained SWNTs and the separative efficiency using different dyes have been studied using Raman spectroscopy. It was found that the polynuclear molecules with more benzene rings show higher selectivity. Meanwhile, the separative efficiency is also sensitive to the choice of solvents.


Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2009.C132

Publication date: February 1, 2009

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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