期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 132, 期 26, 页码 9020-9029出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja101001t
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资金
- NSERC
- Canada Research Chair
- Canada Foundation for Innovation (CFI)
- Canadian Institutes of Health Research (CIHR)
- National Research Council (NRC)
- University of Saskatchewan
- Office of Basic Energy Sciences of the U S Department of Energy [DE-AC03-76SF00098]
The C 1s X-ray absorption spectra of several isolated bundles of single-walled carbon nanotubes (SWCNT) have been measured using scanning transmission X-ray microscopy. First the C 1s and O 1s spectra of a purified but unfunctionalized SWCNT were measured. The C 1s -> pi* transition at 285 eV exhibited almost as strong a dichroic effect (spectral dependence on orientation) as that found in multiwalled carbon nanotubes (Najafi; et al Small 2008, 7, 2279-2285). Second, purified SWCNT were functionalized with dodecyl and then investigated by STXM. Spectral evidence for the dodecyl functionalization is presented and discussed in comparison to the X-ray absorption spectra of aliphatic hydrocarbons. Both orientation and functionalization mapping of an individual SWCNT bundle is demonstrated.
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