Synthesis and Raman characterization of mono-sized single-wall carbon nanotubes in one-dimensional channels of AlPO4-5 crystals |
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| Authors: | HD Sun ZK Tang J Chen G Li |
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| Institution: | (1) Physics Department, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong (Fax: +852/2719-8105, E-mail: phsunh@ust.hk), HK;(2) Department of Chemistry, Jilin University, 119 Jiefang Road, Changchun 130023, P.R. China, CN |
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| Abstract: | Mono-sized single-wall carbon nanotubes were formed in one-dimensional channels of AlPO4-5 single crystal (AFI) by pyrolysis of tripropylamine (TPA). Raman spectra have been measured for the TPA-AFI crystals thermally
processed at different conditions. TPA molecules are carbonized at 400 °C, and carbon nanotubes were formed at 500 °C or above.
The radial-breathing mode, which is special for carbon nanotube geometry, was observed. Three Raman-active modes with symmetry
A
1g, E
1g, and E
2g were identified by detailed symmetrical analysis for the polarized-Raman spectra.
Received: 29 October 1998 / Accepted: 29 March 1999 / Published online: 24 June 1999 |
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| Keywords: | PACS: 61 18 -j 78 30 Na 81 05 Tp |
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