Carbon Nanotube–Nucleobase Hybrids: Nanorings from Uracil-Modified Single-Walled Carbon Nanotubes

Authors

  • Dr. Prabhpreet Singh,

    1. CNRS, Institut de Biologie Moléculaire et Cellulaire, Laboratoire d'Immunologie et Chimie Thérapeutiques, 67000 Strasbourg (France), Fax: (+33) 388 610680
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  • Dr. Francesca Maria Toma,

    1. Dipartimento di Scienze Chimiche e Farmaceutiche, Università di Trieste, 34127 Trieste (Italy)
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  • Dipl.-Chem. Jitendra Kumar,

    1. Department of Chemistry, Indian Institute of Technology-Kanpur, Kanpur-208016 UP (India)
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  • Dipl.-Chem. V. Venkatesh,

    1. Department of Chemistry, Indian Institute of Technology-Kanpur, Kanpur-208016 UP (India)
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  • Dr. Jesus Raya,

    1. Institut de Chimie, Laboratoire de RMN et de biophysique des membranes UMR 7177 CNRS Université de Strasbourg, 67000 Strasbourg (France)
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  • Prof. Dr. Maurizio Prato,

    1. Dipartimento di Scienze Chimiche e Farmaceutiche, Università di Trieste, 34127 Trieste (Italy)
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  • Prof. Dr. Sandeep Verma,

    Corresponding author
    1. Department of Chemistry, Indian Institute of Technology-Kanpur, Kanpur-208016 UP (India)
    • Department of Chemistry, Indian Institute of Technology-Kanpur, Kanpur-208016 UP (India)
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  • Dr. Alberto Bianco

    Corresponding author
    1. CNRS, Institut de Biologie Moléculaire et Cellulaire, Laboratoire d'Immunologie et Chimie Thérapeutiques, 67000 Strasbourg (France), Fax: (+33) 388 610680
    • CNRS, Institut de Biologie Moléculaire et Cellulaire, Laboratoire d'Immunologie et Chimie Thérapeutiques, 67000 Strasbourg (France), Fax: (+33) 388 610680
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Abstract

Single-walled carbon nanotubes (SWCNTs) have been covalently functionalized with uracil nucleobase. The hybrids have been characterized by using complementary spectroscopic and microscopic techniques including solid-state NMR spectroscopy. The uracil-functionalized SWCNTs are able to self-assemble into regular nanorings with a diameter of 50–70 nm, as observed by AFM and TEM. AFM shows that the rings do not have a consistent height and thickness, which indicates that they may be formed by separate bundles of CNTs. The simplest model for the nanoring formation likely involves two bundles of CNTs interacting with each other via uracil–uracil base-pairing at both CNT ends. These nanorings can be envisaged for the development of advanced electronic circuits.

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