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 journalArticle

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 1

Fingerprint

Viologens
Glucose sensors
Nanocomposites
Electrochemical sensors
glucose
nanocomposites
Glucose
sensors
Sensors
Nanoparticles
Molecules
Nanocomposite films
nanoparticles
Platinum
Transistors
Enzymes
enzymes
molecules
low concentrations
electron transfer

All Science Journal Classification (ASJC) codes

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

Cite this

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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.",
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An electrochemical glucose sensor from an organically modified nanocomposite of viologen and TiO 2 . / Kim, Yuna; Malliaras, George G.; Ober, Christopher K.; Kim, Eunkyoung.

In: Journal of Nanoscience and Nanotechnology, Vol. 10, No. 10, 01.10.2010, p. 6869-6873.

Research output: Contribution to journalArticle

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