Voltammetric response of alizarin red s-confined film-coated electrodes to diol and polyol compounds: Use of phenylboronic acid-modified poly(ethyleneimine) as film component

Shigehiro Takahashi, Iwao Suzuki, Takuto Ojima, Daichi Minaki, Jun Ichi Anzai

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Alizarin red S (ARS) was confined in layer-by-layer (LbL) films composed of phenylboronic acid-modified poly(ethyleneimine) (PBA-PEI) and carboxymethylcellulose (CMC) to study the voltammetric response to diol and polyol compounds. The LbL film-coated gold (Au) electrode and quartz slide were immersed in an ARS solution to uptake ARS into the film. UV-visible absorption spectra of ARS-confined LbL film suggested that ARS formed boronate ester (ARS-PBS) in the film. The cyclic voltammetry of the ARS-confined LbL film-coated electrodes exhibited oxidation peaks at -0.50 and -0.62 V, which were ascribed to the oxidation reactions of ARS-PBS and free ARS, respectively, in the LbL film. The peak current at -0.62 V increased upon the addition of diol or polyol compounds such as L-dopa, glucose, and sorbitol into the solution, depending on the concentration, whereas the peak current at -0.50 V decreased. The results suggest a possible use of ARS-confined PBA-PEI/CMC LbL film-coated Au electrodes for the construction of voltammetric sensors for diol and polyol compounds.

Original languageEnglish
Article number317
JournalSensors (Switzerland)
Volume18
Issue number1
DOIs
Publication statusPublished - 2018 Jan 22

Keywords

  • Alizarin red s
  • Layer-by-layer film
  • Phenylboronic acid
  • Voltammetric response

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Electrical and Electronic Engineering

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