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DOI	10.1126/science.1166265
	Brightly fluorescent single-walled carbon nanotubes via an oxygen-excluding surfactant organization
	Ju S.-Y.; Kopcha W.P.; Papadimitrakopoulos F.
发表日期	2009
ISSN	0036-8075
起始页码	1319
结束页码	1323
卷号	323 期号:5919
英文摘要	Attaining high photoluminescence quantum yields for single-walled carbon nanotubes (SWNTs) in order to broaden their optoelectronics and sensing applications has been a challenging task. Among various nonradiative pathways, sidewall chemisorption of oxygen provides a known defect for exciton quenching through nanotube hole doping. We found that an aliphatic (dodecyl) analog of flavin mononucleotide, FC12, leads to high dispersion of SWNTs, which tend to aggregate into bundles. Unlike other surfactants, the surface organization of FC12 is sufficiently tight to exclude oxygen from the SWNT surface, which led to quantum yields as high as 20%. Toluene-dispersed, FC12-wrapped nanotubes exhibited an absorption spectrum with ultrasharp peaks (widths of 12 to 25 milli-electron volts) devoid of the characteristic background absorption of most nanotube dispersions.
英文关键词	dichlorodifluoromethane; oxygen; single walled nanotube; surfactant; toluene; carbon; luminescence; oxygen; sorption; surfactant; absorption; absorption spectroscopy; article; dispersion; electron; priority journal; quantum yield; Acetates; Acetone; Benzene; Flavin Mononucleotide; Flavins; Fluorescence; Molecular Structure; Nanotubes, Carbon; Oxygen; Solvents; Spectroscopy, Near-Infrared; Spectrum Analysis; Toluene
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/244207
作者单位	Nanomaterials Optoelectronics Laboratory, Polymer Program, University of Connecticut, Storrs, CT 06269, United States; Department of Chemistry, Institute of Materials Science, University of Connecticut, Storrs, CT 06269, United States
推荐引用方式 GB/T 7714	Ju S.-Y.,Kopcha W.P.,Papadimitrakopoulos F.. Brightly fluorescent single-walled carbon nanotubes via an oxygen-excluding surfactant organization[J],2009,323(5919).
APA	Ju S.-Y.,Kopcha W.P.,&Papadimitrakopoulos F..(2009).Brightly fluorescent single-walled carbon nanotubes via an oxygen-excluding surfactant organization.Science,323(5919).
MLA	Ju S.-Y.,et al."Brightly fluorescent single-walled carbon nanotubes via an oxygen-excluding surfactant organization".Science 323.5919(2009).