Abstract
Use of a single template-grown carbon nanotube as a separation column to separate attoliter volumes of binary mixtures of fluorescent dyes has been demonstrated. The cylindrical nanotube walls are used as stationary phase and the surface area is increased by growing smaller multi-walled carbon nanotubes within the larger nanotube column. Liquid-liquid extraction is performed to separate selectively soluble solutes in a solvent, and chromatographic separation is demonstrated using thin, long nanotubes coated inside with iron oxide nanoparticles. The setup is also used to determine the diffusion coefficient of a solute at the sub-micrometer scale. This study opens avenues for analytical chemistry in attoliter volumes of fluids for various applications and cellular analysis at the single cell level.
Recommended Citation
R. Singhal et al., "Separation and Liquid Chromatography Using a Single Carbon Nanotube," Scientific Reports, vol. 2, Nature Publishing Group, Jan 2012.
The definitive version is available at https://doi.org/10.1038/srep00510
Department(s)
Chemistry
International Standard Serial Number (ISSN)
2045-2322
Document Type
Article - Journal
Document Version
Final Version
File Type
text
Language(s)
English
Rights
© 2012 Nature Publishing Group, All rights reserved.
Publication Date
01 Jan 2012
