期刊
ANALYTICAL CHEMISTRY
卷 86, 期 22, 页码 11018-11023出版社
AMER CHEMICAL SOC
DOI: 10.1021/ac502365w
关键词
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资金
- National Science Foundation [CHE-1112374]
- Welch Foundation [C-0807]
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [1112374, 1409698] Funding Source: National Science Foundation
The recent application of density gradient ultracentrifugation (DGU) for structural sorting of single-walled carbon nanotube samples has created a need for highly selective extraction of closely spaced layers formed in the centrifuged tube. We describe a novel computer-controlled device designed for this purpose. Through the use of fine needles, systematic needle motions, and slow flow rates, multiple sample layers can be aspirated under program control with minimal cross contamination between layers. The fractionator's performance is illustrated with DGU-sorted samples of single-walled carbon nanotubes.
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