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

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

doi:10.1166/jnn.2010.2948

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

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

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

10 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 language	English
Pages (from-to)	6869-6873
Number of pages	5
Journal	Journal of Nanoscience and Nanotechnology
Volume	10
Issue number	10
DOIs	https://doi.org/10.1166/jnn.2010.2948
Publication status	Published - 2010 Oct

All Science Journal Classification (ASJC) codes

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

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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

Abstract

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