Quantitative comparison of ultracentrifuged and diluted single walled nanotube dispersions; differences in dispersion quality

被引：17
作者：
Cathcart, Helen
Coleman, Jonathan N. [1 ]
机构：
[1] Trinity Coll Dublin, Sch Phys, Dublin 2, Ireland
来源：
CHEMICAL PHYSICS LETTERS | 2009年 / 474卷 / 1-3期
基金：
爱尔兰科学基金会;
关键词：
DESIGNED AMPHIPHILIC PEPTIDE; CARBON NANOTUBES; INDIVIDUAL NANOTUBES; LARGE POPULATIONS; AMIDE SOLVENTS; DNA; DIAMETER; FLUORESCENCE; SPECTROSCOPY; KINETICS;
D O I：
10.1016/j.cplett.2009.04.022
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：
We have carried out a quantitative comparison of the dispersion quality for ultracentrifuged and diluted surfactant-stabilised single walled nanotube dispersions. We have characterised these dispersions at a fixed concentration of similar to 30 mu g mL(1) by absorption and photoluminescence spectroscopy as well as by statistical atomic force microscopy. Both the ultracentrifuged and the diluted samples contained significant quantities of bundles as well as individual nanotubes. The ultracentrifuged sample contained similar to 4 times more individualised SWNTs than the diluted sample with partial concentrations of individual nanotubes of 4.8 and 1.1 mu g mL(1), respectively. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：122 / 126
页数：5
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