An electrochemical glucose sensor from an organically modified nanocomposite of viologen and TiO 2

Yuna Kim, George G. Malliaras, Christopher K. Ober, Eunkyoung Kim

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

An organically modified TiO 2 nanocomposite was explored for glucose detection. Bis-Butyl viologen (BBV) was mixed with TiO 2 nanoparticles to generate highly dispersed nanocomposite solution, which provided organically modified nanocomposite film of TiO 2 (BBV-TiO 2). A transistor type sensor was fabricated using the BBV-TiO 2 film and platinum gate electrode. The BBV-TiO 2 nanocomposite sensor showed higher sensitivity to glucose sensing in low concentration region compared to that of TiO 2 sensor. This result was ascribed to facilitated electron transport by the adsorbed viologen molecules on TiO 2 nanoparticles, where viologen molecules act as an electron transfer mediator between enzyme and TiO 2.

Original languageEnglish
Pages (from-to)6869-6873
Number of pages5
JournalJournal of Nanoscience and Nanotechnology
Volume10
Issue number10
DOIs
Publication statusPublished - 2010 Oct

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics

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