Nanofiber mats from DNA, SWNTs, and poly(ethylene oxide) and their application in glucose biosensors

Yong Liu*, Jun Chen, Nguyen Tuan Anh, Chee O. Too, Violeta Misoska, Gordon G. Wallace

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    21 Citations (Scopus)

    Abstract

    Ultrafine fibers with diameters ranging from 50 to 300 nm were prepared from DNA/single-walled carbon nanotubes (SWNTs)/poly(ethylene oxide) blended dispersion. Well-defined electrospun fibers were obtained by good control of key dispersion properties related to electrospinning, such as ionic conductivity, surface tension, and viscosity. Raman spectroscopy confirmed the presence of SWNT in the resulting fibers, indicating good interaction between DNA and SWNT. The resulting fibers also exhibited electroactive behavior and could be used as an immobilization matrix for a glucose oxidase enzyme biosensor. The sensor response was linear up to 20 mM glucose with a sensitivity of 2.4 mA cm-2 M-1.

    Original languageEnglish
    Pages (from-to)K100-K103
    Number of pages4
    JournalJournal of the Electrochemical Society
    Volume155
    Issue number5
    DOIs
    Publication statusPublished - 2008

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