Selective Bundling of Zigzag Single-Walled Carbon Nanotubes

被引：30

作者：

Blum, Carolin ^{[1
]}

Stuerzl, Ninette ^{[1
]}

Hennrich, Frank ^{[1
]}

Lebedkin, Sergei ^{[1
]}

Heeg, Sebastian ^{[2
]}

Dumlich, Heiko ^{[2
]}

Reich, Stephanie ^{[2
]}

Kappes, Manfred M. ^{[1
,3
]}

机构：

[1] Karlsruhe Inst Technol, Inst Nanotechnol, D-76021 Karlsruhe, Germany

[2] Free Univ Berlin, Inst Expt Phys, D-14195 Berlin, Germany

[3] Karlsruhe Inst Technol, Inst Phys Chem, D-76128 Karlsruhe, Germany

来源：

ACS NANO | 2011年 / 5卷 / 04期

基金：

欧洲研究理事会;

关键词：

zigzag carbon nanotubes; bundles; gel filtration; size exclusion chromatography; separation; sorting; purification; SEPARATION; PHOTOLUMINESCENCE;

D O I：

10.1021/nn1033746

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A simple, high throughput fractionation procedure for aqueous/SDS (sodium dodecyl sulfate) suspensions of single-walled carbon nanotubes (SWNTs) is presented, which yields thin bundles of semiconducting-SWNTs with small chiral angles. To demonstrate this we show the photoluminescence signatures of nanotube suspensions that contain almost exclusively zigzag and near-zigzag tubes. Starting suspensions and resulting fractions were characterized using optical absorption, resonance Raman and photoluminescence spectroscopies as well as scanning force microscopy. Taken together with literature observations, our findings suggest that near zigzag edge tubes of similar diameters in a bundle are harder to separate from each other than for other chiral Index combinations. We discuss the Implications of these observations for SWNT growth and dispersion.

引用

页码：2847 / 2854

页数：8

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