Journal
APPLIED PHYSICS EXPRESS
Volume 1, Issue 11, Pages -Publisher
JAPAN SOC APPLIED PHYSICS
DOI: 10.1143/APEX.1.114001
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Funding
- Ministry of Education, Culture, Sports, Science and Technology of Japan [18710108]
- New Energy and Industrial Technology Development Organization (NEDO) of Japan
- Grants-in-Aid for Scientific Research [18710108] Funding Source: KAKEN
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We have developed a novel separation method of metallic and semiconducting single-wall carbon nanotubes (SWCNTs) using agarose gel electrophoresis. When the SWCNTs were isolated with sodium dodecyl sulfate (SDS) and embedded in agarose gel, only the metallic SWCNTs separated from the starting gel by an electric field. After 20 min, almost all SWCNTs applied to gel electrophoresis were separated into two fractions, containing similar to 95% semiconducting and similar to 70% metallic nanotubes. The difference in the response to the electric field between metallic and semiconducting SWCNTs can be explained by the higher affinity of semiconducting SWCNTs to agarose than to SDS. (C) 2008 The Japan Society of Applied Physics
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