Separation of metallic and semiconducting single-walled carbon nanotubes through fluorous chemistry

Ghosh, Sandeep ; Rao, C. N. R. (2009) Separation of metallic and semiconducting single-walled carbon nanotubes through fluorous chemistry Nano Research, 2 (3). pp. 183-191. ISSN 1998-0124

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Official URL: http://www.springerlink.com/content/n1344k83778624...

Related URL: http://dx.doi.org/10.1007/s12274-009-9016-9

Abstract

Separation of metallic from semiconducting single-walled carbon nanotubes has been a major challenge for some time and some previous efforts have resulted in partial success. We have accomplished the separation effectively by employing fluorous chemistry wherein the diazonium salt of 4-heptadecafluorooc tylaniline selectively reacts with the metallic nanotubes present in the mixture of nanotubes. The resulting fluoroderivative was extracted in perfluorohexane leaving the semiconducting nanotubes in the aqueous layer. The products have been characterized by both Raman and electronic absorption spectroscopy. The method avoids the cumbersome centrifugation step required by some other procedures.

Item Type:Article
Source:Copyright of this article belongs to Tsinghua University.
Keywords:Carbon Nanotubes; Metallic; Semiconducting; Fluorous; Separation
ID Code:44658
Deposited On:22 Jun 2011 14:02
Last Modified:22 Jun 2011 14:02

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