Skip to main content

NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.

Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.

U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Preparation and Separation of DNA-Wrapped Carbon Nanotubes

Published

Author(s)

Geyou Ao, Ming Zheng

Abstract

Purification of single-chirality single-wall carbon nanotubes (SWCNTs)from their synthetic mixture is a prerequisite for many applications. DNA-controlled carbon nanotube (CNT) purification has evolved over a decade along with other separation techniques utilizing different types of dispersing agents such as surfactants and polymers. The size of single-stranded DNA (ssDNA) library provides practically unlimited ways of coating SWCNTs. Recent development in separating surfactant dispersed SWCNTs by polymer aqueous two-phase (ATP) extraction has enabled rapid and efficient SWCNT separation on a larger volume scale. Applying the ATP separation method to DNA-SWCNT hybrids opens a new route for effective sorting of nanotubes into each and every single-chirality species. Here, we report protocols for purifying as many as 15 single-chirality nanotube species from a synthetic mixture based on the separation of DNA-SWCNTs by the ATP method.
Citation
Current Protocols in Chemical Biology

Keywords

carbon nanotube purification, ATP system, DNA sequences, single-chirality, modulating agents

Citation

Ao, G. and Zheng, M. (2015), Preparation and Separation of DNA-Wrapped Carbon Nanotubes, Current Protocols in Chemical Biology (Accessed October 4, 2025)

Issues

If you have any questions about this publication or are having problems accessing it, please contact [email protected].

Created March 18, 2015, Updated March 21, 2017
Was this page helpful?