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DOI	10.1126/science.1196382
	Oxygen doping modifies near-infrared band gaps in fluorescent single-walled carbon nanotubes
	Ghosh S.; Bachilo S.M.; Simonette R.A.; Beckingham K.M.; Weisman R.B.
发表日期	2010
ISSN	0036-8075
起始页码	1656
结束页码	1659
卷号	330 期号:6011
英文摘要	Controlled chemical modifications of single-walled carbon nanotubes (SWCNTs) that tune their useful properties have been sought for multiple applications. We found that beneficial optical changes in SWCNTs resulted from introducing low concentrations of oxygen atoms. Stable covalently oxygen-doped nanotubes were prepared by exposure to ozone and then light. Treated samples showed distinct, structure-specific near-infrared fluorescence at wavelengths 10 to 15% longer than displayed by pristine semiconducting SWCNTs. Dopant sites harvest light energy absorbed in undoped nanotube regions by trapping mobile excitons. The oxygen-doped SWCNTs are much easier to detect and image than pristine SWCNTs because they give stronger near-infrared emission and do not absorb at the shifted emission wavelength.
英文关键词	carbon nanotube; ozone; single walled nanotube; absorption; carbon; concentration (composition); energy use; fluorescence; light effect; near infrared; oxygen; ozone; wavelength; article; atom; fluorescence; infrared radiation; light; light absorption; priority journal; quantum chemistry; semiconductor; Adenocarcinoma; Female; Fluorescence; Humans; Microscopy, Fluorescence; Models, Chemical; Nanotubes, Carbon; Oxygen; Ozone; Spectrometry, Fluorescence; Tumor Cells, Cultured; Uterine Neoplasms
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/243798
作者单位	Department of Chemistry, R. E. Smalley Institute for Nanoscale Science and Technology, Rice University, Houston, TX 77005, United States; Department of Biochemistry and Cell Biology, R. E. Smalley Institute for Nanoscale Science and Technology, Rice University, Houston, TX 77005, United States
推荐引用方式 GB/T 7714	Ghosh S.,Bachilo S.M.,Simonette R.A.,et al. Oxygen doping modifies near-infrared band gaps in fluorescent single-walled carbon nanotubes[J],2010,330(6011).
APA	Ghosh S.,Bachilo S.M.,Simonette R.A.,Beckingham K.M.,&Weisman R.B..(2010).Oxygen doping modifies near-infrared band gaps in fluorescent single-walled carbon nanotubes.Science,330(6011).
MLA	Ghosh S.,et al."Oxygen doping modifies near-infrared band gaps in fluorescent single-walled carbon nanotubes".Science 330.6011(2010).