Voltammetric response of phenylboronic acid polymer-modified gold electrode to sugars

Shigehiro Takahashi; Jun Ichi Anzai

doi:10.1166/sl.2005.026

Voltammetric response of phenylboronic acid polymer-modified gold electrode to sugars

Shigehiro Takahashi, Jun Ichi Anzai

PHA - Molecular Pharmaceutical Science

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

14 Citations (Scopus)

Abstract

The surface of a gold (Au) disk electrode was coated with a layered thin film consisting of poly(allylamine) bearing phenylboronic acid (PBA) moieties in the side chains to fabricate a voltammetric sensor sensitive to sugars. The modified Au electrode exhibited a voltammetric response to sugars in the presence of [Fe(CN)₆]^3- ion in the sample solution at a neutral pH. The peak current of the cyclic voltammograms decreased depending on the type and concentration of sugars, as a result of the formation of PBA-sugar adduct on the surface of the film. The dynamic range of the electrode is 1-100 mM for glucose and 0.1-10 mM for fructose, the sensitivity being ca. 5 μA/decade for glucose and ca. 6 μA/decade for fructose.

Original language	English
Pages (from-to)	244-247
Number of pages	4
Journal	Sensor Letters
Volume	3
Issue number	3
DOIs	https://doi.org/10.1166/sl.2005.026
Publication status	Published - 2005 Sep 1

Keywords

Electrode
Phenylboronic acid
Sugar sensor
Thin film

ASJC Scopus subject areas

Electrical and Electronic Engineering
Signal Processing
Control and Systems Engineering

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abstract = "The surface of a gold (Au) disk electrode was coated with a layered thin film consisting of poly(allylamine) bearing phenylboronic acid (PBA) moieties in the side chains to fabricate a voltammetric sensor sensitive to sugars. The modified Au electrode exhibited a voltammetric response to sugars in the presence of [Fe(CN)6]3- ion in the sample solution at a neutral pH. The peak current of the cyclic voltammograms decreased depending on the type and concentration of sugars, as a result of the formation of PBA-sugar adduct on the surface of the film. The dynamic range of the electrode is 1-100 mM for glucose and 0.1-10 mM for fructose, the sensitivity being ca. 5 μA/decade for glucose and ca. 6 μA/decade for fructose.",

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AU - Anzai, Jun Ichi

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N2 - The surface of a gold (Au) disk electrode was coated with a layered thin film consisting of poly(allylamine) bearing phenylboronic acid (PBA) moieties in the side chains to fabricate a voltammetric sensor sensitive to sugars. The modified Au electrode exhibited a voltammetric response to sugars in the presence of [Fe(CN)6]3- ion in the sample solution at a neutral pH. The peak current of the cyclic voltammograms decreased depending on the type and concentration of sugars, as a result of the formation of PBA-sugar adduct on the surface of the film. The dynamic range of the electrode is 1-100 mM for glucose and 0.1-10 mM for fructose, the sensitivity being ca. 5 μA/decade for glucose and ca. 6 μA/decade for fructose.

AB - The surface of a gold (Au) disk electrode was coated with a layered thin film consisting of poly(allylamine) bearing phenylboronic acid (PBA) moieties in the side chains to fabricate a voltammetric sensor sensitive to sugars. The modified Au electrode exhibited a voltammetric response to sugars in the presence of [Fe(CN)6]3- ion in the sample solution at a neutral pH. The peak current of the cyclic voltammograms decreased depending on the type and concentration of sugars, as a result of the formation of PBA-sugar adduct on the surface of the film. The dynamic range of the electrode is 1-100 mM for glucose and 0.1-10 mM for fructose, the sensitivity being ca. 5 μA/decade for glucose and ca. 6 μA/decade for fructose.

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