Simple length determination of single-walled carbon nanotubes by viscosity measurements in dilute suspensions

被引：71

作者：

Parra-Vasquez, A. Nicholas G.

Stepanek, Ingrid

Davis, Virginia A.

Moore, Valerie C.

Haroz, Erik H.

Shaver, Jonah

Hauge, Robert H.

Smalley, Richard E.

Pasquali, Matteo

机构：

[1] Rice Univ, Richard E Smalley Inst Nanoscale Sci & Technol, Dept Chem & Biomol Engn, MS 362, Houston, TX 77005 USA

[2] Rice Univ, Richard E Smalley Inst Nanoscale Sci & Technol, Dept Chem, MS 80, Houston, TX 77005 USA

[3] Rice Univ, Richard E Smalley Inst Nanoscale Sci & Technol, Dept Elect & Comp Engn, MS 366, Houston, TX 77005 USA

[4] Rice Univ, Richard E Smalley Inst Nanoscale Sci & Technol, Dept Appl Phys, MS 104, Houston, TX 77005 USA

[5] Rice Univ, Richard E Smalley Inst Nanoscale Sci & Technol, Carbon Nanotechnol Lab, Houston, TX 77005 USA

来源：

MACROMOLECULES | 2007年 / 40卷 / 11期

关键词：

D O I：

10.1021/ma062003n

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We describe a fast, reproducible method to accurately measure the length of single-walled carbon nanotubes (SWNTs). The method is based on measuring the viscosity of a macroscopic sample of dilute suspended SWNTs. The average length is determined from the difference between the zero-shear viscosity of the suspension and that of the solvent. Using the relationship between viscosity and length, the average length of HiPco SWNTs is found to range from 400 to 700 nm, in agreement with atomic force microscopy (AFM) measurements. Compared to AFM, length determination by viscosity is faster and appears more reproducible.

引用

页码：4043 / 4047

页数：5

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