Highly selective solid-state sensor for iodide based on the combined use of platinum (IV) phthalocyanine and solidified pyridinium ionic liquid

Shvedene, N. V.; Abashev, Mikhail N.; Arakelyan, Suren A.; Otkidach, K. N.; Tomilova, Larisa G.; Pletnev, I. V.

doi:10.1007/s10008-018-4159-9

Cited by 10 publications

(9 citation statements)

References 37 publications

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“…The classical ion-selective electrodes (ISEs), due to their design, e.g., large dimensions, are not compatible with modern clinical applications, which aims at reducing the sample volume. For this reason, for decades, vast part of research was focused on the elimination of the classic redox system (e.g., Ag/AgCl with liquid internal electrolyte) by designing electrodes in solid-contact technology [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. The use of solid-contact technology enabled design of the ISEs in planar technology, their miniaturization, and unquestionably widening range of implementation of ISEs, including clinical and biological analyses of small volume samples [25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

A miniaturized solid-contact potentiometric multisensor platform for determination of ionic profiles in human saliva

Urbanowicz

Pijanowska

Jasiński

et al. 2019

J Solid State Electrochem

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This paper describes a miniaturized multisensor platform (MP-ISES) consisting of electrodes: a reference one (RE) and ionselective electrodes (ISEs) for monitoring Na + , K + , Ca 2+ , Mg 2+ , Cl − , and SCN − ions and pH in human saliva. Gold electrode surface was modified by deposition of two layers: electrosynthesized PEDOT:PSS forming an intermediate layer, and ionselective membrane. The developed ISEs were characterized by a wide linear range and sensitivity consistent with the Nernst model. The entire MP-ISEs are characterized by satisfactory metrological parameters demonstrating their applicability in biomedical research, in particular in measurements concerning determination of ionic profiles of saliva. Saliva samples of 18 volunteers aged from 20 to 26 participating in a month experiment had been daily collected and investigated using the MP-ISEs assigned individually to each person. Personalized profiles of ions (ionograms) in saliva, such as Na + , K + , Ca 2+ , Mg 2+ , Cl − , SCN − , and H + , were obtained. Keywords Potentiometric multisensor platform. Personalized ion profiles (ionograms) in human saliva. Solid-contact ion-selective electrodes. Simultaneous determination of ion concentration * Marcin Urbanowicz

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Section: Introductionmentioning

confidence: 99%

A miniaturized solid-contact potentiometric multisensor platform for determination of ionic profiles in human saliva

Urbanowicz

Pijanowska

Jasiński

et al. 2019

J Solid State Electrochem

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“…It should be noted that the proposed ionophore-based electrode was found to be relatively selective for bicarbonate and may also be considered for bicarbonate detection in the future. Shvedene et al described a solid-state iodide-selective electrode based on platinum(IV) phthalocyanine as an ionophore and solidified pyridinium ionic liquid, N -cetylpyridinium bromide, as a membrane matrix . Interestingly, a plasticized PVC membrane with the same ionophore exhibits only a slightly improved selectivity to iodide.…”

Section: Sensor Materialsmentioning

confidence: 99%

“…Shvedene et al described a solid-state iodide-selective electrode based on platinum(IV) phthalocyanine as an ionophore and solidified pyridinium ionic liquid, N-cetylpyridinium bromide, as a membrane matrix. 133 Interestingly, a plasticized PVC membrane with the same ionophore exhibits only a slightly improved selectivity to iodide. At the same time, the ISE based on a combination of the ionophore and the ionic liquid demonstrated a high selectivity to iodide over a number of hydrophobic anions.…”

Section: )mentioning

confidence: 99%

Potentiometric Sensing

2020

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“…While ILs have been explored for sensing applications, there are large numbers of issues that remain to be addressed. For example, potentiometric ion sensing by ILs has been well documented; − however, it is disadvantageous due to the requirement of the expensive use of instruments to monitor the response function. Further, most of the ion sensing based on ILs happens in the presence of metal doping, which again causes environmental concerns.…”

Section: Introductionmentioning

confidence: 99%

Pyridine Appended Poly(Alkyl Ether) Based Ionogels for Naked Eye Detection of Cyanide Ions: A Metal-Free Approach

Sarkar

Prabakaran

Prasad

et al. 2020

ACS Sustainable Chem. Eng.

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The present study initiates applications of ionogels (gels from ionic liquids (ILs)) toward selective detection of cyanide ions (CN − ) in aqueous media through a metal-free and colorimetric approach. Three low molecular weight ionogels based on poly(alkyl ether) appended pyridinium ILscontaining ethyl (IL-1), butyl (IL-2), and hexyl (IL-3) substituentswere designed, synthesized, and used for cyanide sensing. All ILs formed unique thermoreversible gels in aqueous solutions of dimethylformamide, dimethylsulfoxide, ethanol, methanol, and dioxane. The self-assembled structure of the ionogels has been characterized by temperature-dependent 1 H nuclear magnetic resonance, powder X-ray diffraction, scanning electron microscopy, atomic force microscopy, and rheology. The assynthesized ionogels exhibited a rapid color change from yellow to saffron upon interaction with CN − ions (0.1 equiv). The remarkable features of this detection are that (a) the gel color was changed without losing the physical structural integrity; (b) the color change is reversible in the presence of a proton source, assuring the reusability of the material; and (c) the color change can be identified by the naked eye. The mechanism of the sensing has been investigated using 1 H nuclear magnetic resonance titration experiments. All the ionogels showed a CN − response at micromolar range in the solution media and at 0.1 equiv to the gelator concentration in the gel medium. Results taken together suggest that as-prepared gels are useful for developing environmentally friendly portable kits for testing CN − in aqueous samples with a response time in seconds.

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Highly selective solid-state sensor for iodide based on the combined use of platinum (IV) phthalocyanine and solidified pyridinium ionic liquid

Cited by 10 publications

References 37 publications

A miniaturized solid-contact potentiometric multisensor platform for determination of ionic profiles in human saliva

A miniaturized solid-contact potentiometric multisensor platform for determination of ionic profiles in human saliva

Potentiometric Sensing

Pyridine Appended Poly(Alkyl Ether) Based Ionogels for Naked Eye Detection of Cyanide Ions: A Metal-Free Approach

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