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Covalent Conjugation of Multi-walled Carbon Nanotubes with Proteins

    Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 12 - Chapter in an edited book (Author)peer-review

    Abstract

    Linkage of proteins to carbon nanotubes (CNTs) is fundamentally important for applications of CNTs in medicinal and biological fields, as well as in biosensor or chemically modulated nanoelectronic devices. In this contribution, we provide a detailed protocol for the synthesis and characterization of covalent CNT-protein adducts. Functionalization of multiwalled carbon nanotubes (MWCNTs) with proteins has been achieved by the initial carboxylation of MWCNTs followed by amidation with the desired proteins. Attenuated total reflection Fourier transform infrared (ATR-FTIR) and X-ray photoelectron spectroscopy (XPS) measurements validated the presence of a covalent linkage between MWCNTs and proteins. The visualization of proteins on the surface of MWCNTs was furthermore achieved using atomic force microscopy (AFM). The protein-conjugated nanocomposites can also be assembled into multidimensional addressable heterostructures through highly specific biomolecular recognition system (e.g., antibody-antigen).
    Original languageEnglish
    Title of host publicationCarbon Nanotubes
    Subtitle of host publicationMethods and Protocols
    EditorsKannan Balasubramanian, Marko Burghard
    Place of PublicationUnited Kingdom
    Pages9-17
    ISBN (Electronic)9781607615798
    DOIs
    Publication statusPublished - 1 Aug 2010

    Publication series

    NameMethods in molecular biology (Clifton, N.J.)
    PublisherHumana Press, Inc.
    ISSN (Print)1064-3745

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