Structure-Based Carbon Nanotube Sorting by Sequence-Dependent DNA Assembly

20031,581 citationsJournal Article

Authors

Ming Zheng · DuPont (United States)

Anand Jagota · DuPont (United States)

Michael S. Strano · Wilmington University

Adelina P. Santos · DuPont (United States)

Paul W. Barone · University of Illinois Urbana-Champaign

S. G. Chou · Experimental Station

Bruce A. Diner ·

Abstract

Wrapping of carbon nanotubes (CNTs) by single-stranded DNA (ssDNA) was found to be sequence-dependent. A systematic search of the ssDNA library selected a sequence d(GT)n, n = 10 to 45 that self-assembles into a helical structure around individual nanotubes in such a way that the electrostatics of the DNA-CNT hybrid depends on tube diameter and electronic properties, enabling nanotube separation by anion exchange chromatography. Optical absorption and Raman spectroscopy show that early fractions are enriched in the smaller diameter and metallic tubes, whereas late fractions are enriched in the larger diameter and semiconducting tubes.

Topics & Keywords

Carbon Nanotubes in Composites Nanopore and Nanochannel Transport Studies Graphene research and applications

Publication Details

Published in: Science

Volume 302, Issue 5650, pp. 1545-1548

DOI: 10.1126/science.1091911

Field-Weighted Citation Impact: 45.85

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Structure-Based Carbon Nanotube Sorting by Sequence-Dependent DNA Assembly

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Abstract

Topics & Keywords

Publication Details