TY - JOUR
T1 - Voltammetric response of alizarin red s-confined film-coated electrodes to diol and polyol compounds
T2 - Use of phenylboronic acid-modified poly(ethyleneimine) as film component
AU - Takahashi, Shigehiro
AU - Suzuki, Iwao
AU - Ojima, Takuto
AU - Minaki, Daichi
AU - Anzai, Jun Ichi
N1 - Funding Information:
SSuupppplleemmeennttaarryy MMaatteerriiaallss:: TThhee ffoolllloowwiinngg aarree aavvaaiillaabbllee oonnlliinnee aatt hhttttpp::///w/wwwww.m.mddppi.ic.ocomm/s/11.424-8220/18/1/317/ s1. Acknowledgments: This work was supported in part by a Grant-in-Aid (426670010) from the Japan Society for tthhee PPrroommoottiioonn ooff SScciieennccee..
Funding Information:
This work was supported in part by a Grant-in-Aid (426670010) from the Japan Society for the Promotion of Science.
Publisher Copyright:
© 2018 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2018/1/22
Y1 - 2018/1/22
N2 - 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.
AB - 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.
KW - Alizarin red s
KW - Layer-by-layer film
KW - Phenylboronic acid
KW - Voltammetric response
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U2 - 10.3390/s18010317
DO - 10.3390/s18010317
M3 - Article
AN - SCOPUS:85040949970
VL - 18
JO - Sensors (Switzerland)
JF - Sensors (Switzerland)
SN - 1424-8220
IS - 1
M1 - 317
ER -