Diameter dependence of single-walled carbon nanotubes with flavin adenine dinucleotide glucose dehydrogenase for direct electron transfer bioanodes

Atsuya Suzuki, Kazuya Ishida, Hitoshi Muguruma, Hisanori Iwasa, Takeshi Tanaka, Atsunori Hiratsuka, Katsumi Tsuji, Takahide Kishimoto

Research output: Contribution to journalArticle

Abstract

The diameter dependence of single-walled carbon nanotubes (SWCNTs) with flavin adenine dinucleotide glucose dehydrogenase (FAD-GDH) for direct electron transfer (DET) type bioanodes is presented for the first time. In order to address the issue, we use SWCNTs having different diameters fabricated by direct-injection pyrolytic synthesis, which can control the diameter in a wide range with the other parameters fixed. Three different diameters of SWCNTs are examined: average diameter d m = 1.0, 1.5, and 2.0 nm. In order to achieve DET, a debundled, individual SWCNT has to be placed at the FAD position in the GDH protein pocket. The bioanodes with d m = 1.0 and 1.5 nm SWCNTs show better performance than that with d m = 2.0 nm SWCNTs. The diameter dependence of SWCNTs for bioanode performance is thought to be related to the distance between the SWCNTs and FAD positioned in the reaction center of the GDH protein shell.

Original languageEnglish
Article number051015
JournalJapanese Journal of Applied Physics
Volume58
Issue number5
DOIs
Publication statusPublished - 2019 Jan 1

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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