Ordered molecular assembly inside carbon nanotube forest films for high-efficiency enzymatic biofuel cell

Syuhei Yoshino, Takeo Miyake, Hirokazu Kaji, Takeo Yamada, Kenji Hata, Matsuhiko Nishizawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Molecularly ordered composites of polyvinylimidazole-[Os(bipyridine) 2Cl] (PVI-[Os(bpy) 2Cl]) and glucose oxidase (GOD) are assembled inside a film of aligned carbon nanotubes. The structure of the prepared GOD/PVI-[Os(bpy) 2Cl]/CNT composite film is entirely uniform and stable; more than 90% bioelectrocatalytic activity could be maintained even after storage for 6 days. Owing to the ideal positional relationship achieved between enzyme, mediator and electrode, the prepared film shows a high bioelectrocatalytic activity for glucose oxidation (ca. 15 mA cm-2 at 25 °C) with an extremely high electron turnover rate (ca. 650 s -1) comparable to the value for the GOD solutions, indicating almost every enzyme molecules entrapped within the ensemble (ca. 3 × 10 12 enzymes in a 1× 1 mm2 film) can work to the full. The free-standing, flexible composite film can be used by winding on a needle device, for example, a self-powered sugar monitor.

Original languageEnglish
Title of host publicationProceedings of the 16th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2012
PublisherChemical and Biological Microsystems Society
Pages1867-1869
Number of pages3
ISBN (Print)9780979806452
Publication statusPublished - 2012 Jan 1
Event16th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2012 - Okinawa, Japan
Duration: 2012 Oct 282012 Nov 1

Publication series

NameProceedings of the 16th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2012

Other

Other16th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2012
CountryJapan
CityOkinawa
Period12/10/2812/11/1

Keywords

  • Biofuel cell
  • Carbon nanotube forest
  • Glucose oxidase
  • Redox polymer

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Bioengineering

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  • Cite this

    Yoshino, S., Miyake, T., Kaji, H., Yamada, T., Hata, K., & Nishizawa, M. (2012). Ordered molecular assembly inside carbon nanotube forest films for high-efficiency enzymatic biofuel cell. In Proceedings of the 16th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2012 (pp. 1867-1869). (Proceedings of the 16th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2012). Chemical and Biological Microsystems Society.