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Article: Optical properties of ultrashort semiconducting single-walled carbon nanotube capsules down to sub-10 nm

TitleOptical properties of ultrashort semiconducting single-walled carbon nanotube capsules down to sub-10 nm
Authors
Issue Date2008
Citation
Journal of the American Chemical Society, 2008, v. 130, n. 20, p. 6551-6555 How to Cite?
AbstractSingle-walled carbon nanotubes (SWNTs) are typically long (≳100 nm) and have been well established as novel quasi one-dimensional systems with interesting electrical, mechanical, and optical properties. Here, quasi zero-dimensional SWNTs with finite lengths down to the molecular scale (7.5 nm in average) were obtained by length separation using a density gradient ultracentrifugation method. Different sedimentation rates of nanotubes with different lengths in a density gradient were taken advantage of to sort SWNTs according to length. Optical experiments on the SWNT fractions revealed that the UV-vis-NIR absorption and photoluminescence peaks of the ultrashort SWNTs blue-shift up to ∼30 meV compared to long nanotubes, owing to quantum confinement effects along the length of ultrashort SWNTs. These nanotube capsules essentially correspond to SWNT quantum dots. © 2008 American Chemical Society.
Persistent Identifierhttp://hdl.handle.net/10722/334169
ISSN
2023 Impact Factor: 14.4
2023 SCImago Journal Rankings: 5.489
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorSun, Xiaoming-
dc.contributor.authorZaric, Sasa-
dc.contributor.authorDaranciang, Dan-
dc.contributor.authorWelsher, Kevin-
dc.contributor.authorLu, Yuerui-
dc.contributor.authorLi, Xiaolin-
dc.contributor.authorDai, Hongjie-
dc.date.accessioned2023-10-20T06:46:14Z-
dc.date.available2023-10-20T06:46:14Z-
dc.date.issued2008-
dc.identifier.citationJournal of the American Chemical Society, 2008, v. 130, n. 20, p. 6551-6555-
dc.identifier.issn0002-7863-
dc.identifier.urihttp://hdl.handle.net/10722/334169-
dc.description.abstractSingle-walled carbon nanotubes (SWNTs) are typically long (≳100 nm) and have been well established as novel quasi one-dimensional systems with interesting electrical, mechanical, and optical properties. Here, quasi zero-dimensional SWNTs with finite lengths down to the molecular scale (7.5 nm in average) were obtained by length separation using a density gradient ultracentrifugation method. Different sedimentation rates of nanotubes with different lengths in a density gradient were taken advantage of to sort SWNTs according to length. Optical experiments on the SWNT fractions revealed that the UV-vis-NIR absorption and photoluminescence peaks of the ultrashort SWNTs blue-shift up to ∼30 meV compared to long nanotubes, owing to quantum confinement effects along the length of ultrashort SWNTs. These nanotube capsules essentially correspond to SWNT quantum dots. © 2008 American Chemical Society.-
dc.languageeng-
dc.relation.ispartofJournal of the American Chemical Society-
dc.titleOptical properties of ultrashort semiconducting single-walled carbon nanotube capsules down to sub-10 nm-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/ja8006929-
dc.identifier.scopuseid_2-s2.0-43949091153-
dc.identifier.volume130-
dc.identifier.issue20-
dc.identifier.spage6551-
dc.identifier.epage6555-
dc.identifier.isiWOS:000255854100049-

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