气候变化领域集成服务门户(CCPortal): Band gap fluorescence from individual single-walled carbon nanotubes

CCPortal

DOI	10.1126/science.1072631
	Band gap fluorescence from individual single-walled carbon nanotubes
	O'Connell M.J.; Bachilo S.H.; Huffman C.B.; Moore V.C.; Strano M.S.; Haroz E.H.; Rialon K.L.; Boul P.J.; Noon W.H.; Kittrell C.; Ma J.; Hauge R.H.; Weisman R.B.; Smalley R.E.
发表日期	2002
ISSN	0036-8075
起始页码	593
结束页码	596
卷号	297 期号:5581
英文摘要	Fluorescence has been observed directly across the band gap of semiconducting carbon nanotubes. We obtained individual nanotubes, each encased in a cylindrical micelle, by ultrasonically agitating an aqueous dispersion of raw singlewalled carbon nanotubes in sodium dodecyl sulfate and then centrifuging to remove tube bundles, ropes, and residual catalyst. Aggregation of nanotubes into bundles otherwise quenches the fluorescence through interactions with metallic tubes and substantially broadens the absorption spectra. At pH less than 5, the absorption and emission spectra of individual nanotubes show evidence of band gap-selective protonation of the side walls of the tube. This protonation is readily reversed by treatment with base or ultraviolet light.
英文关键词	Absorption; Catalysts; Dispersions; Fluorescence; Micelles; pH effects; Semiconductor materials; Ultraviolet radiation; Band gap; Carbon nanotubes; carbon; dodecyl sulfate sodium; absorption; carbon; fluorescence; aqueous solution; article; catalyst; centrifugation; dispersion; fluorescence; micelle; nanotechnology; pH; priority journal; proton transport; semiconductor; ultraviolet radiation
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/244928
作者单位	Department of Chemistry, Rice Quantum Institute, Rice University, 6100 Main Street, Houston, TX 7700S, United States
推荐引用方式 GB/T 7714	O'Connell M.J.,Bachilo S.H.,Huffman C.B.,et al. Band gap fluorescence from individual single-walled carbon nanotubes[J],2002,297(5581).
APA	O'Connell M.J..,Bachilo S.H..,Huffman C.B..,Moore V.C..,Strano M.S..,...&Smalley R.E..(2002).Band gap fluorescence from individual single-walled carbon nanotubes.Science,297(5581).
MLA	O'Connell M.J.,et al."Band gap fluorescence from individual single-walled carbon nanotubes".Science 297.5581(2002).