Enrichment of single-walled carbon nanotubes by diameter in density gradients

被引：431

作者：

Arnold, MS ^{[1
]}

Stupp, SI ^{[1
]}

Hersam, MC ^{[1
]}

机构：

[1] Northwestern Univ, Feinberg Sch Med, Dept Mat Sci & Engn, Dept Chem, Evanston, IL 60208 USA

来源：

NANO LETTERS | 2005年 / 5卷 / 04期

关键词：

D O I：

10.1021/nl050133o

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The bulk enrichment and separation of single-walled carbon nanotubes (SWNTs) by diameter has been achieved through ultracentrifugation of DNA-wrapped SWNTs in aqueous density gradients. The separation is identified by the visual formation of colored bands of SWNTs in the density range of 1.11-1.17 g cm(-3). The optical absorbance spectra of the separated SWNTs indicate that SWNTs of decreasing diameter are increasingly more buoyant. This nondestructive and scalable separation strategy is expected to impact the fields of molecular electronics, optoelectronics, and sensing where SWNTs of a monodisperse band gap are essential.

引用

页码：713 / 718

页数：6

共 30 条

[1] Optical absorption and transient photobleaching in solutions of surfactant encapsulated and DNA wrapped single-walled carbon nanotubes [J].

Arnold, MS ;

Lan, S ;

Cruz, SC ;

Sharping, JE ;

Stupp, SI ;

Kumar, P ;

Hersam, MC .

QUANTUM SENSING AND NANOPHOTONIC DEVICES, 2004, 5359 :376-386

[2] Band gap photobleaching in isolated single-walled carbon nanotubes [J].

Arnold, MS ;

Sharping, JE ;

Stupp, SI ;

Kumar, P ;

Hersam, MC .

NANO LETTERS, 2003, 3 (11) :1549-1554

[3] Narrow (n,m)-distribution of single-walled carbon nanotubes grown using a solid supported catalyst [J].

Bachilo, SM ;

Balzano, L ;

Herrera, JE ;

Pompeo, F ;

Resasco, DE ;

Weisman, RB .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (37) :11186-11187

[4] Logic circuits with carbon nanotube transistors [J].

Bachtold, A ;

Hadley, P ;

Nakanishi, T ;

Dekker, C .

SCIENCE, 2001, 294 (5545) :1317-1320

[5] Demonstration of diameter-selective reactivity in the sidewall ozonation of SWNTs by resonance Raman spectroscopy [J].

Banerjee, S ;

Wong, SS .

NANO LETTERS, 2004, 4 (08) :1445-1450

[6] Noncovalent functionalization of carbon nanotubes for highly specific electronic biosensors [J].

Chen, RJ ;

Bangsaruntip, S ;

Drouvalakis, KA ;

Kam, NWS ;

Shim, M ;

Li, YM ;

Kim, W ;

Utz, PJ ;

Dai, HJ .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2003, 100 (09) :4984-4989

[7] Bulk separative enrichment in metallic or semiconducting single-walled carbon nanotubes [J].

Chen, ZH ;

Du, X ;

Du, MH ;

Rancken, CD ;

Cheng, HP ;

Rinzler, AG .

NANO LETTERS, 2003, 3 (09) :1245-1249

[8] Engineering carbon nanotubes and nanotube circuits using electrical breakdown [J].

Collins, PC ;

Arnold, MS ;

Avouris, P .

SCIENCE, 2001, 292 (5517) :706-709

[9] Carbon nanotube inter- and intramolecular logic gates [J].

Derycke, V ;

Martel, R ;

Appenzeller, J ;

Avouris, P .

NANO LETTERS, 2001, 1 (09) :453-456

[10] IODIXANOL - A NONIONIC ISOSMOTIC CENTRIFUGATION MEDIUM FOR THE FORMATION OF SELF-GENERATED GRADIENTS [J].

FORD, T ;

GRAHAM, J ;

RICKWOOD, D .

ANALYTICAL BIOCHEMISTRY, 1994, 220 (02) :360-366

← 1 2 3 →