Structure-Based Carbon Nanotube Sorting by Sequence-Dependent DNA Assembly-Reference-Cited by-同舟云学术

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

Published:2003-11-28 Issue:5650 Volume:302 Page:1545-1548
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Zheng Ming¹²³,Jagota Anand¹²³,Strano Michael S.¹²³,Santos Adelina P.¹²³,Barone Paul¹²³,Chou S. Grace¹²³,Diner Bruce A.¹²³,Dresselhaus Mildred S.¹²³,Mclean Robert S.¹²³,Onoa G. Bibiana¹²³,Samsonidze Georgii G.¹²³,Semke Ellen D.¹²³,Usrey Monica¹²³,Walls Dennis J.¹²³

Affiliation:

1. DuPont Central Research and Development, Experimental Station, Wilmington, DE 19880, USA.

2. Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA.

3. Department of Physics, Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.

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.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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