The effect of ozone oxidation on single-walled carbon nanotubes

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dc.creatorSimmons, J. M.
dc.creatorNichols, B. M.
dc.creatorBaker, S. E.
dc.creatorMarcus, Matthew S.
dc.creatorCastellini, O. M.
dc.creatorLee, C. -S.
dc.creatorHamers, R. J.
dc.creatorEriksson, M. A.
dc.date2007-10-03
dc.date.accessioned2026-07-07T08:33:44Z
dc.date.available2026-07-07T08:33:44Z
dc.descriptionExposing single-walled carbon nanotubes to room temperature UV-generated ozone leads to an irreversible increase in their electrical resistance. We demonstrate that the increased resistance is due to ozone oxidation on the sidewalls of the nanotubes rather than at the end caps. Raman and x-ray photoelectron spectroscopy show an increase in the defect density due to the oxidation of the nanotubes. Using ultraviolet photoelectron spectroscopy we show that these defects represent the removal of pi-conjugated electron states near the Fermi level, leading to the observed increase in electrical resistance. Oxidation of carbon nanotubes is an important first step in many chemical functionalization processes. Since the oxidation rate is controllable with short exposures, UV-generated ozone offers the potential for use as a low-thermal budget processing tool.
dc.description28 pages, 9 figures
dc.identifierhttps://arxiv.org/abs/0710.0803
dc.identifierhttp://arxiv.org/abs/0710.0803
dc.identifierJ. Phys. Chem. B 110, 7113 (2006)
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/139237
dc.subjectMaterials Science
dc.titleThe effect of ozone oxidation on single-walled carbon nanotubes
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