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

Shigehiro Takahashi, Jun Ichi Anzai

Research output: Contribution to journalArticlepeer-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 languageEnglish
Pages (from-to)244-247
Number of pages4
JournalSensor Letters
Volume3
Issue number3
DOIs
Publication statusPublished - 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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