期刊
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 4, 期 17, 页码 2805-2810出版社
AMER CHEMICAL SOC
DOI: 10.1021/jz4013596
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资金
- National Science Foundation [DMR-1006391]
- Argonne-Northwestern Solar Energy Research (ANSER) Center, an Energy Frontier Research Center
- U.S. Department of Energy, Office of Science, Basic Energy Sciences [DE-SC0001059]
- IIN Postdoctoral Fellowship
- Northwestern University International Institute for Nanotechnology
- NSF-NSEC
- NSF-MRSEC
- Keck Foundation
- State of Illinois
- Northwestern University
- NSF SBIR program [1143249]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1006391, 1121262] Funding Source: National Science Foundation
- Directorate For Engineering [1143249] Funding Source: National Science Foundation
- Div Of Industrial Innovation & Partnersh [1143249] Funding Source: National Science Foundation
Arc discharge single walled carbon nanotubes (SWCNTs) possess superlative optical and electronic properties that are of high interest for technologically important applications including fiber optic communications, biomedical imaging, and field-effect transistors. However, as grown arc discharge SWCNTs possess a mixture of metallic and semiconducting species in addition to a wide diameter distribution (1.2 to 17 nm) that limit their performance in devices. While previous postsynthetic sorting efforts have achieved separation by electronic type and diameter refinement for metallic are discharge SWCNTs, tight diameter distributions of semiconducting arc discharge SWCNTs have not yet been realized. Herein, we present two advance's in density gradient ultracentrifugation that enable the isolation of high purity (>99%) semiconducting arc discharge SWCNTs with narrow diameter distributions centered at similar to 1.6 and similar to 1.4 nm. The resulting,diameter-refined populations of semiconducting arc discharge SWCNTs possess monodisperse characteristics that are well-suited for high-performance optical and electronic technologies.
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