Characterization of DNA-wrapped carbon nanotubes by resonance Raman and optical absorption spectroscopies

被引：55

作者：

Fantini, C. ^{[1
]}

Jorio, A.

Santos, A. P.

Peressinotto, V. S. T.

Pimenta, M. A.

机构：

[1] Univ Fed Minas Gerais, Dept Fis, BR-30123970 Belo Horizonte, MG, Brazil

[2] Brazilian Natl Inst Metrol INMETRO, Div Mat Metrol, BR-25250020 Duque De Caxias, RJ, Brazil

[3] Ctr Desenvolvimento Tecnol Nucl, BR-30123970 Belo Horizonte, MG, Brazil

来源：

CHEMICAL PHYSICS LETTERS | 2007年 / 439卷 / 1-3期

关键词：

D O I：

10.1016/j.cplett.2007.03.085

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Single-wall carbon nanotube (SVVNT) samples grown by the CoMoCAT method are investigated by resonance Raman scattering and optical absorption. The environment effects in the population of the different (n,m) nanotubes present in the samples are characterized for DNA-wrapped nanotubes and the results are compared with SDS-wrapped CoMoCAT nanotubes. A significant decrease in the Raman intensity of metallic nanotubes is observed in the DNA-wrapped sample as compared to the SDS-wrapped sample, supporting the DNA-based separation method. This result is confirmed by optical absorption measurements in both samples. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：138 / 142

页数：5

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