Nanoparticles functionalized with phenylboronic acid for the potentiometric detection of saccharides

Tatiana V. Shishkanova, Přemysl Fitl, Vladimír Král, Jiří Barek

Результат исследований: Материалы для журналаСтатья

7 Цитирования (Scopus)

Выдержка

We have proposed a concept for the analytical application of modified gold nanoparticles in potentiometric sensors. The main idea is to embed modified gold nanoparticles as receptor units during electropolymerization into a polymeric matrix which should serve as a transducer of the potentiometric signal. The concept was verified using a model system based on gold nanoparticles modified with mercaptophenylboronic acid (MPBA-AuNPs) as a receptor of saccharides in a pH-sensitive polymer matrix, namely polyaniline (PANI). The determination of saccharides, in particular d-glucose, is based on the determination of released protons as products of the reaction between mercaptophenylboronic acid and saccharides. Differential pulse voltammetry showed that approximately 33% of the MPBA-AuNPs present in the polymerization mixture were built into the PANI polymeric film. The absorption and reflectivity spectra confirmed the recognition process occurring between mercaptophenylboronic acid and d-glucose inside the pH-sensitive polymeric matrix. A potentiometric response of MPBA-AuNP-modified PANI electrodes towards d-glucose in the concentration range from 0.31 up to 33 mM with a sensitivity of + 47 mV/decade was verified. The MPBA-AuNP-modified PANI film can be considered to be a saccharide-sensitive receptor layer exhibiting an indirect mechanism of signal generation.

Язык оригиналаАнглийский
Страницы (с-по)106-111
Число страниц6
ЖурналJournal of Electroanalytical Chemistry
Том761
DOI
СостояниеОпубликовано - 15 янв 2016
Опубликовано для внешнего пользованияДа

Отпечаток

Polyaniline
Gold
Nanoparticles
Glucose
Acids
Potentiometric sensors
Electropolymerization
Voltammetry
Polymer matrix
Polymer films
Protons
Transducers
Polymerization
Electrodes
benzeneboronic acid
polyaniline

ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemical Engineering(all)
  • Electrochemistry

Цитировать

Nanoparticles functionalized with phenylboronic acid for the potentiometric detection of saccharides. / Shishkanova, Tatiana V.; Fitl, Přemysl; Král, Vladimír; Barek, Jiří.

В: Journal of Electroanalytical Chemistry, Том 761, 15.01.2016, стр. 106-111.

Результат исследований: Материалы для журналаСтатья

Shishkanova, Tatiana V. ; Fitl, Přemysl ; Král, Vladimír ; Barek, Jiří. / Nanoparticles functionalized with phenylboronic acid for the potentiometric detection of saccharides. В: Journal of Electroanalytical Chemistry. 2016 ; Том 761. стр. 106-111.
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abstract = "We have proposed a concept for the analytical application of modified gold nanoparticles in potentiometric sensors. The main idea is to embed modified gold nanoparticles as receptor units during electropolymerization into a polymeric matrix which should serve as a transducer of the potentiometric signal. The concept was verified using a model system based on gold nanoparticles modified with mercaptophenylboronic acid (MPBA-AuNPs) as a receptor of saccharides in a pH-sensitive polymer matrix, namely polyaniline (PANI). The determination of saccharides, in particular d-glucose, is based on the determination of released protons as products of the reaction between mercaptophenylboronic acid and saccharides. Differential pulse voltammetry showed that approximately 33{\%} of the MPBA-AuNPs present in the polymerization mixture were built into the PANI polymeric film. The absorption and reflectivity spectra confirmed the recognition process occurring between mercaptophenylboronic acid and d-glucose inside the pH-sensitive polymeric matrix. A potentiometric response of MPBA-AuNP-modified PANI electrodes towards d-glucose in the concentration range from 0.31 up to 33 mM with a sensitivity of + 47 mV/decade was verified. The MPBA-AuNP-modified PANI film can be considered to be a saccharide-sensitive receptor layer exhibiting an indirect mechanism of signal generation.",
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