Nano Archive

Synthetic strategies for Y-junction carbon nanotubes

Deepak, F. Leonard and Govindaraj , Achutharao and Rao, C. N. R. (2001) Synthetic strategies for Y-junction carbon nanotubes. CHEMICAL PHYSICS LETTERS, 345 (1-2). pp. 5-10.

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Abstract

Y-junction carbon nanotubes can be produced in relatively large quantities by the vapor phase pyrolysis of a mixture of cobaltocene or ferrocene with thiophene in a hydrogen atmosphere. Pyrolysis of Ni- and Fe-phthalocyanines or Fe(CO)5 with thiophene also yields Y-junction nanotubes. Good yields of Y-junction nanotubes were obtained by pyrolyzing thiophene over an Ni(Fe)/SiO2 catalyst as well. Many of the nanotubes show multiple Y-junctions. Of the various methods employed by us, the pyrolysis of thiophene with metallocenes or over a Ni(Fe)/SiO2 catalyst yields the best results and the latter is a less expensive route. The availability of large quantities of Y-junctions by the procedures employed here should render them useful for exploitation in nanoelectronics.

Item Type:Article
Subjects:Material Science > Nanofabrication processes and tools
Physical Science > Nanoelectronics
Material Science > Nanochemistry
Divisions:Faculty of Engineering, Science and Mathematics > School of Physics
Faculty of Engineering, Science and Mathematics > School of Chemistry
ID Code:4109
Deposited By:JNCASR
Deposited On:02 Feb 2009 15:40
Last Modified:06 Apr 2009 14:05

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