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Solid Contact Potentiometric Sensors Based on a New Class of Ionic Liquids on Thiacalixarene Platform

New solid-contact potentiometric sensors have been developed for hydrogen phosphate recognition on the basis of ionic liquids containing tetrasubstituted derivatives of thiacalix[4]arene in cone and 1,3-alternate conformations with trimethyl- and triethylammonium fragments at the lower rim substitue...

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Autores principales: Padnya, Pavel L., Porfireva, Anna V., Evtugyn, Gennady A., Stoikov, Ivan I.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6277689/
https://www.ncbi.nlm.nih.gov/pubmed/30538984
http://dx.doi.org/10.3389/fchem.2018.00594
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author Padnya, Pavel L.
Porfireva, Anna V.
Evtugyn, Gennady A.
Stoikov, Ivan I.
author_facet Padnya, Pavel L.
Porfireva, Anna V.
Evtugyn, Gennady A.
Stoikov, Ivan I.
author_sort Padnya, Pavel L.
collection PubMed
description New solid-contact potentiometric sensors have been developed for hydrogen phosphate recognition on the basis of ionic liquids containing tetrasubstituted derivatives of thiacalix[4]arene in cone and 1,3-alternate conformations with trimethyl- and triethylammonium fragments at the lower rim substituents. The recognition of selected anions including carbonate, hydrogen phosphate, perchlorate, oxalate, picrate, and EDTA was conducted using electrochemical impedance spectroscopy with ferricyanide redox probe. For the potentiometric sensor assembling, the ionic liquids were stabilized by multiwalled carbon nanotubes and carbon black deposited on the glassy carbon electrode. The influence of support, steric factors and modification conditions on the sensor performance has been investigated. As was shown, potentiometric sensors developed make it possible to selectively determine hydrogen phosphate anion within the concentration range from 1 × 10(−2) to 1 × 10(−6) M and limit of detection of 2 × 10(−7)−1 × 10(−6) M with unbiased selectivity coefficients varied from 1.2 × 10(−1) to 1.0 × 10(−8) (carbonate, acetate, oxalate, succinate, glutharate, glycolate, and malonate anions).
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spelling pubmed-62776892018-12-11 Solid Contact Potentiometric Sensors Based on a New Class of Ionic Liquids on Thiacalixarene Platform Padnya, Pavel L. Porfireva, Anna V. Evtugyn, Gennady A. Stoikov, Ivan I. Front Chem Chemistry New solid-contact potentiometric sensors have been developed for hydrogen phosphate recognition on the basis of ionic liquids containing tetrasubstituted derivatives of thiacalix[4]arene in cone and 1,3-alternate conformations with trimethyl- and triethylammonium fragments at the lower rim substituents. The recognition of selected anions including carbonate, hydrogen phosphate, perchlorate, oxalate, picrate, and EDTA was conducted using electrochemical impedance spectroscopy with ferricyanide redox probe. For the potentiometric sensor assembling, the ionic liquids were stabilized by multiwalled carbon nanotubes and carbon black deposited on the glassy carbon electrode. The influence of support, steric factors and modification conditions on the sensor performance has been investigated. As was shown, potentiometric sensors developed make it possible to selectively determine hydrogen phosphate anion within the concentration range from 1 × 10(−2) to 1 × 10(−6) M and limit of detection of 2 × 10(−7)−1 × 10(−6) M with unbiased selectivity coefficients varied from 1.2 × 10(−1) to 1.0 × 10(−8) (carbonate, acetate, oxalate, succinate, glutharate, glycolate, and malonate anions). Frontiers Media S.A. 2018-11-27 /pmc/articles/PMC6277689/ /pubmed/30538984 http://dx.doi.org/10.3389/fchem.2018.00594 Text en Copyright © 2018 Padnya, Porfireva, Evtugyn and Stoikov. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Chemistry
Padnya, Pavel L.
Porfireva, Anna V.
Evtugyn, Gennady A.
Stoikov, Ivan I.
Solid Contact Potentiometric Sensors Based on a New Class of Ionic Liquids on Thiacalixarene Platform
title Solid Contact Potentiometric Sensors Based on a New Class of Ionic Liquids on Thiacalixarene Platform
title_full Solid Contact Potentiometric Sensors Based on a New Class of Ionic Liquids on Thiacalixarene Platform
title_fullStr Solid Contact Potentiometric Sensors Based on a New Class of Ionic Liquids on Thiacalixarene Platform
title_full_unstemmed Solid Contact Potentiometric Sensors Based on a New Class of Ionic Liquids on Thiacalixarene Platform
title_short Solid Contact Potentiometric Sensors Based on a New Class of Ionic Liquids on Thiacalixarene Platform
title_sort solid contact potentiometric sensors based on a new class of ionic liquids on thiacalixarene platform
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6277689/
https://www.ncbi.nlm.nih.gov/pubmed/30538984
http://dx.doi.org/10.3389/fchem.2018.00594
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