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

20 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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