Structure-based carbon nanotube sorting by sequence-dependent DNA assembly.

Ming Zheng; Anand Jagota; Michael S Strano; Adelina P Santos; Paul Barone; S Grace Chou; Bruce A Diner; Mildred S Dresselhaus; Robert S McLean; G Bibiana Onoa; Georgii G Samsonidze; Ellen D Semke; Monica Usrey; Dennis J Walls

doi:10.1126/science.1091911

PubMed · 14645843

Structure-based carbon nanotube sorting by sequence-dependent DNA assembly.

Ming Zheng·Anand Jagota·Michael S Strano·Adelina P Santos·Paul Barone·S Grace Chou·Bruce A Diner·Mildred S Dresselhaus·Robert S McLean·G Bibiana Onoa·Georgii G Samsonidze·Ellen D Semke·Monica Usrey·Dennis J Walls

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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.

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Anions Base Sequence Chromatography, Ion Exchange DNA, Single-Stranded Deoxyribonucleotides Gene Library Hydrogen Bonding Microscopy, Atomic Force Nanotechnology Nanotubes, Carbon Nucleic Acid Conformation Repetitive Sequences, Nucleic Acid Semiconductors Spectrum Analysis Spectrum Analysis, Raman Static Electricity Journal Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S.

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Ming Zheng, Anand Jagota, Michael S Strano, Adelina P Santos, Paul Barone, S Grace Chou, Bruce A Diner, Mildred S Dresselhaus, Robert S McLean, G Bibiana Onoa, Georgii G Samsonidze, Ellen D Semke, Monica Usrey, Dennis J Walls. 2003-11-28. Structure-based carbon nanotube sorting by sequence-dependent DNA assembly.. https://doi.org/10.1126/science.1091911

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