Bulk separative enrichment in metallic or semiconducting single-walled carbon nanotubes

被引：235

作者：

Chen, ZH ^{[1
]}

Du, X ^{[1
]}

Du, MH ^{[1
]}

Rancken, CD ^{[1
]}

Cheng, HP ^{[1
]}

Rinzler, AG ^{[1
]}

机构：

[1] Univ Florida, Dept Phys, Gainesville, FL 32611 USA

来源：

NANO LETTERS | 2003年 / 3卷 / 09期

关键词：

D O I：

10.1021/nl0344763

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A postsynthesis method of separating metallic from semiconducting single-walled carbon nanotubes and a method based on absorption spectroscopy for assay of the separation efficiency are described. The separation method relies on chemical discrimination in the charge-transfer complex formation between bromine and the metallic versus semiconducting nanotubes and takes advantage of the resulting density difference to effect a centrifugation-based separation. Calculations support the proposed separation mechanism.

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页码：1245 / 1249

页数：5

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