Oxygen Doping Modifies Near-Infrared Band Gaps in Fluorescent Single-Walled Carbon Nanotubes

被引：318

作者：

Ghosh, Saunab ^{[1
,2
]}

Bachilo, Sergei M. ^{[1
,2
]}

Simonette, Rebecca A. ^{[2
,3
]}

Beckingham, Kathleen M. ^{[2
,3
]}

Weisman, R. Bruce ^{[1
,2
]}

机构：

[1] Rice Univ, Dept Chem, Houston, TX 77005 USA

[2] Rice Univ, RE Smalley Inst Nanoscale Sci & Technol, Houston, TX 77005 USA

[3] Rice Univ, Dept Biochem & Cell Biol, Houston, TX 77005 USA

来源：

SCIENCE | 2010年 / 330卷 / 6011期

关键词：

STONE-WALES DEFECTS; OZONE ADSORPTION; OXIDATION; FUNCTIONALIZATION; PURIFICATION; OZONOLYSIS; MOBILITY; OZONIDES; C60O;

D O I：

10.1126/science.1196382

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

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.

引用

页码：1656 / 1659

页数：4

共 31 条

[1] Density functional theory calculations of ozone adsorption on sidewall single-wall carbon nanotubes with Stone-Wales defects [J].

Akdim, Brahim ;

Kar, Tapas ;

Duan, Xiaofeng ;

Pachter, Ruth .

CHEMICAL PHYSICS LETTERS, 2007, 445 (4-6) :281-287

[2]

[Anonymous], 2004, Carbon Nanotubes: Basic Concepts and Physical Properties

[3] Structure-assigned optical spectra of single-walled carbon nanotubes [J].

Bachilo, SM ;

Strano, MS ;

Kittrell, C ;

Hauge, RH ;

Smalley, RE ;

Weisman, RB .

SCIENCE, 2002, 298 (5602) :2361-2366

[4] Covalent surface chemistry of single-walled carbon nanotubes [J].

Banerjee, S ;

Hemraj-Benny, T ;

Wong, SS .

ADVANCED MATERIALS, 2005, 17 (01) :17-29

[5] Rational sidewall functionalization and purification of single-walled carbon nanotubes by solution-phase ozonolysis [J].

Banerjee, S ;

Wong, SS .

JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (47) :12144-12151

[6] Ozonation of single-walled carbon nanotubes and their assemblies on rigid self-assembled monolayers [J].

Cai, LT ;

Bahr, JL ;

Yao, YX ;

Tour, JM .

CHEMISTRY OF MATERIALS, 2002, 14 (10) :4235-4241

[7] Cutting of single-walled carbon nanotubes by ozonolysis [J].

Chen, Zheyi ;

Ziegler, Kirk J. ;

Shaver, Jonah ;

Hauge, Robert H. ;

Smalley, Richard E. .

JOURNAL OF PHYSICAL CHEMISTRY B, 2006, 110 (24) :11624-11627

[8] Stepwise quenching of exciton fluorescence in carbon nanotubes by single-molecule reactions [J].

Cognet, Laurent ;

Tsyboulski, Dmitri A. ;

Rocha, John-David R. ;

Doyle, Condell D. ;

Tour, James M. ;

Weisman, R. Bruce .

SCIENCE, 2007, 316 (5830) :1465-1468

[9]

Ghosh S, 2010, NAT NANOTECHNOL, V5, P443, DOI [10.1038/NNANO.2010.68, 10.1038/nnano.2010.68]

[10] Defect-induced Photoluminescence from Dark Excitonic States in Individual Single-Walled Carbon Nanotubes [J].

Harutyunyan, Hayk ;

Gokus, Tobias ;

Green, Alexander A. ;

Hersam, Mark C. ;

Allegrini, Maria ;

Hartschuh, Achim .

NANO LETTERS, 2009, 9 (05) :2010-2014

← 1 2 3 4 →