Ultracentrifugation of single-walled nanotubes

Alexander A. Green, Mark C Hersam

Research output: Contribution to journalArticle

58 Citations (Scopus)

Abstract

Density gradient ultracentrifugation (DGU), an approach for sorting single-walled carbon nanotubes (SWNTs) by their physical and electronic structures that combines several desirable attributes for their large-scale production, including scalability, compatibility with a diverse range of raw materials, and iterative repeatability, has been discussed. DGU works by exploiting subtle differences in buoyant density, so the buoyant density of a SWNT must be directly related to its physical and electronic structure for DGU to be successful. Easily controlled parameters, such as surfactant chemistry, initial density gradient profile, and ultracentrifugation acceleration and time offered by DGU technique provide flexibility for a broad range of raw SWNT materials. DGU can be repeated iteratively as following a DGU round, the best fraction to be placed into a next gradient and the process repeated. This allows nearly arbitrary levels of purity to be achieved through multiple iterations.

Original languageEnglish
Pages (from-to)59-60
Number of pages2
JournalMaterials Today
Volume10
Issue number12
DOIs
Publication statusPublished - Dec 2007

Fingerprint

Nanotubes
nanotubes
gradients
Single-walled carbon nanotubes (SWCN)
Electronic structure
carbon nanotubes
electronic structure
Ultracentrifugation
Sorting
Surface-Active Agents
Scalability
Raw materials
Surface active agents
classifying
compatibility
iteration
flexibility
purity
surfactants
chemistry

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Ultracentrifugation of single-walled nanotubes. / Green, Alexander A.; Hersam, Mark C.

In: Materials Today, Vol. 10, No. 12, 12.2007, p. 59-60.

Research output: Contribution to journalArticle

Green, Alexander A. ; Hersam, Mark C. / Ultracentrifugation of single-walled nanotubes. In: Materials Today. 2007 ; Vol. 10, No. 12. pp. 59-60.
@article{c5f84343c7454f69bf43fa134c235cc5,
title = "Ultracentrifugation of single-walled nanotubes",
abstract = "Density gradient ultracentrifugation (DGU), an approach for sorting single-walled carbon nanotubes (SWNTs) by their physical and electronic structures that combines several desirable attributes for their large-scale production, including scalability, compatibility with a diverse range of raw materials, and iterative repeatability, has been discussed. DGU works by exploiting subtle differences in buoyant density, so the buoyant density of a SWNT must be directly related to its physical and electronic structure for DGU to be successful. Easily controlled parameters, such as surfactant chemistry, initial density gradient profile, and ultracentrifugation acceleration and time offered by DGU technique provide flexibility for a broad range of raw SWNT materials. DGU can be repeated iteratively as following a DGU round, the best fraction to be placed into a next gradient and the process repeated. This allows nearly arbitrary levels of purity to be achieved through multiple iterations.",
author = "Green, {Alexander A.} and Hersam, {Mark C}",
year = "2007",
month = "12",
doi = "10.1016/S1369-7021(07)70309-7",
language = "English",
volume = "10",
pages = "59--60",
journal = "Materials Today",
issn = "1369-7021",
publisher = "Elsevier",
number = "12",

}

TY - JOUR

T1 - Ultracentrifugation of single-walled nanotubes

AU - Green, Alexander A.

AU - Hersam, Mark C

PY - 2007/12

Y1 - 2007/12

N2 - Density gradient ultracentrifugation (DGU), an approach for sorting single-walled carbon nanotubes (SWNTs) by their physical and electronic structures that combines several desirable attributes for their large-scale production, including scalability, compatibility with a diverse range of raw materials, and iterative repeatability, has been discussed. DGU works by exploiting subtle differences in buoyant density, so the buoyant density of a SWNT must be directly related to its physical and electronic structure for DGU to be successful. Easily controlled parameters, such as surfactant chemistry, initial density gradient profile, and ultracentrifugation acceleration and time offered by DGU technique provide flexibility for a broad range of raw SWNT materials. DGU can be repeated iteratively as following a DGU round, the best fraction to be placed into a next gradient and the process repeated. This allows nearly arbitrary levels of purity to be achieved through multiple iterations.

AB - Density gradient ultracentrifugation (DGU), an approach for sorting single-walled carbon nanotubes (SWNTs) by their physical and electronic structures that combines several desirable attributes for their large-scale production, including scalability, compatibility with a diverse range of raw materials, and iterative repeatability, has been discussed. DGU works by exploiting subtle differences in buoyant density, so the buoyant density of a SWNT must be directly related to its physical and electronic structure for DGU to be successful. Easily controlled parameters, such as surfactant chemistry, initial density gradient profile, and ultracentrifugation acceleration and time offered by DGU technique provide flexibility for a broad range of raw SWNT materials. DGU can be repeated iteratively as following a DGU round, the best fraction to be placed into a next gradient and the process repeated. This allows nearly arbitrary levels of purity to be achieved through multiple iterations.

UR - http://www.scopus.com/inward/record.url?scp=36249013638&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=36249013638&partnerID=8YFLogxK

U2 - 10.1016/S1369-7021(07)70309-7

DO - 10.1016/S1369-7021(07)70309-7

M3 - Article

VL - 10

SP - 59

EP - 60

JO - Materials Today

JF - Materials Today

SN - 1369-7021

IS - 12

ER -