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HERO ID
8166631
Reference Type
Journal Article
Title
Urea-melt solubilization of single-walled carbon nanotubes
Author(s)
Ford, WE; Jung, A; Hirsch, A; Graupner, R; Scholz, F; Yasuda, A; Wessels, JM
Year
2006
Is Peer Reviewed?
Yes
Journal
Advanced Materials
ISSN:
0935-9648
EISSN:
1521-4095
Volume
18
Issue
9
Page Numbers
1193-1197
Language
English
DOI
10.1002/adma.200502257
Abstract
A new method for urea-melt solubilizing acid-purified single-walled carbon nanotubes, is presented. The urea-modified single-walled carbon nanotubes (U-SWNTs) were isolated from the extracts by precipitation with sodium perchlorate and redissolved in water after the removal of excess sodium perchlorate by washing. The optimal reaction temperature for the urea-melt process was determined to be around 150°C, and differential scanning calorimetric measurements indicated that the reaction occurred rapidly when the temperature reached 140°C. This process is quick, environmental-friendly, provides full-length SWNTs with excellent water solubility.
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