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Carbon nanotubes from organometallic precursors
1Chemistry and Physics of Materials Unit and CSIR Centre of Excellence in Chemistry, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur P. O., Bangalore 560 064, India. cnrrao@jncasr.ac.in
Accounts of Chemical Research
|December 18, 2002
Summary
Organometallic pyrolysis offers a versatile method for synthesizing carbon nanotubes (CNTs) and related nanomaterials. This technique yields aligned CNTs with valuable properties and unique Y-junction structures for nanoelectronics applications.
Area of Science:
- Materials Science
- Nanotechnology
- Chemistry
Background:
- Carbon nanotubes (CNTs) possess unique electrical and mechanical properties.
- Efficient synthesis methods are crucial for unlocking the potential of CNTs.
- Organometallic precursors offer a promising route for controlled CNT fabrication.
Purpose of the Study:
- To explore the synthesis of multiwalled and single-walled carbon nanotubes using organometallic precursors.
- To investigate the properties and applications of CNTs derived from organometallic pyrolysis.
- To develop methods for producing aligned CNTs and Y-junction nanotubes.
Main Methods:
- Pyrolysis of organometallic compounds (metallocenes, phthalocyanines) in a reducing atmosphere.
- Co-pyrolysis of organometallics with hydrocarbons to achieve aligned nanotube bundles.
- Pyrolysis of organometallics in the presence of thiophene to synthesize Y-junction nanotubes.
Main Results:
- Convenient preparation of both multiwalled and single-walled carbon nanotubes.
- Production of aligned nanotube bundles with field emission and hydrogen storage capabilities.
- Large-scale synthesis of Y-junction nanotubes with potential for nanoelectronics.
Conclusions:
- Organometallic pyrolysis is an effective strategy for producing diverse carbon nanotube structures.
- The synthesized CNTs exhibit properties suitable for advanced applications.
- This method facilitates the creation of novel nanostructures like Y-junction nanotubes and enables the synthesis of other inorganic nanotubes and nanowires.