Solid‐Contact Potentiometric Sensor Based on Polyaniline and Unsubstituted Pillar[5]Arene

Stoikova, E. E.; Sorvin, Michail; Shurpik, D. N.; Budnikov, H. C.; Стойков, И. И.; Evtugyn, Gennady

doi:10.1002/elan.201400494

Cited by 26 publications

(12 citation statements)

References 44 publications

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“…Pillar[n]arenes are capable of anion recognition [12], forming supramolecular complexes [13], and they may serve as components of sensors [14,15]. They form inclusion complexes and associates with aromatic compounds [16], which makes them suitable structure blocks for receptor systems working on the dye-displacement principle for inorganic anions [17] and biologically relevant anion substrates, e.g., adenosine triphosphate [18].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Tris-pillar[5]arene and Its Association with Phenothiazine Dye: Colorimetric Recognition of Anions

et al. 2019

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A multicyclophane with a core based on tris(2-aminoethyl)amine (TREN) linked by amide spacers to three fragments of pillar[5]arene was synthesized. The choice of the tris-amide core allowed the multicyclophane to bind to anion guests. The presence of three terminal pillar[5]arene units provides the possibility of effectively binding the colorimetric probe N-phenyl-3-(phenylimino)-3H-phenothiazin-7-amine (PhTz). It was established that the multicyclophane complexed PhTz in chloroform with a 1:1 stoichiometry (lgKa = 5.2 ± 0.1), absorbing at 650 nm. The proposed structure of the complex was confirmed by 1H-NMR spectroscopy: the amide group linking the pillar[5]arene to the TREN core forms a hydrogen bond with the PhTz imino-group while the pillararenes surround PhTz. It was established that the PhTz:tris-pillar[5]arene complex could be used as a colorimetric probe for fluoride, acetate, and dihydrogen phosphate anions due to the anion binding with proton donating amide groups which displaced the PhTz probe. Dye displacement resulted in a color change from blue to pink, lowering the absorption band at 650 nm and increasing that at 533 nm.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Tris-pillar[5]arene and Its Association with Phenothiazine Dye: Colorimetric Recognition of Anions

et al. 2019

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“…However, the examples of electrochemical sensors cover only metal detection. Recently we have reported on electrochemical behavior of unsubstituted P[5]A involved in redox reactions highly affected by hydrogen bonds and able to recognize various ions by changing the potential and redox activity 31, 32.…”

Section: Introductionmentioning

confidence: 99%

Organic Acid and DNA Sensing with Electrochemical Sensor Based on Carbon Black and Pillar[5]arene

et al. 2016

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Electrochemical sensor has been proposed on the base of glassy carbon electrode (GCE) modified with carbon black (CB) and pillar[5]arene (P[5]A). The characteristics of the peak currents were found to be sensitive to the incubation of the sensor in organic acid and DNA solution. The detection of n×(10−8–10−5) M of organic acid and down to (1–5)×10−18 g of DNA was attributed to the effect of the analytes on the aggregation and relative stability of oxidized and reduced forms of P[5]A. No signal interference with the alkali and alkali‐earth metal ions was found. The electrochemical sensor was tested in the detection of specific DNA interactions, i.e. reactive oxygen species damage and intercalating pharmaceuticals detection.

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“…The electrode potential is approximately constant in the pH range of 3.0–6.5. More positive potentials at lower pH can be ascribed to the formation of positively charged P(An‐co‐MA) coatings, produced due to higher H + doping in acidic medium , and more negative potentials at higher pH may be due to the formation of insoluble copper hydroxide, together with decrease in the P(An‐co‐MA) conductivity . It has been explained that PAn is only electroactive when the pH is lower than four , but the electroactivity of the prepared copolymer P(An‐co‐MA) is considerably extended to higher pH.…”

Section: Resultsmentioning

confidence: 99%

Electrochemically Generated Recognition Sites in Self‐doped Polyaniline Modified Electrodes for Voltammetric and Potentiometric Determination of Copper(II) Ion

Mohammadabadi

Zanganeh

2017

Electroanalysis

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Chemical recognition elements for copper(II) ion have been generated in electrodes modified with poly(aniline‐co‐metanilic acid), P(An‐co‐MA), membrane and the resulting electrodes were used as selective sensors for voltammetric and potentiometric determination of this ion in an extended pH range. The P(An‐co‐MA) membrane was electrodeposited from aqueous mixed monomer solutions of An and MA, without the presence of a supporting electrolyte. For generating the recognition elements, P(An‐co‐MA) modified electrodes were subjected to several consecutive reduction/oxidation potential steps in copper(II) ion solution. It seems that during these potential steps, the receptor sites of the membrane are adjusted to the size, complexing property and hard/soft nature of copper(II) ion. This electrochemically mediated templating process, provided a selective sensor for determination of copper(II) ion. The results of preconcentration/differential pulse anodic stripping voltammetry, indicated analytical relation between the peak current and concentration of copper(II) from 1.0×10−9 to 1.0×10−4 M. The interference effect of various metal ions was explored and it was found that only mercury and silver ions show a considerable interference. The sensor exhibited selective potentiometric response for copper(II) over a wide concentration range (1.0×10−8 to 1.0×10−3 M) with a Nernstian slope of 27.9±0.3 mV per decade of copper(II) ion activity.

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Solid‐Contact Potentiometric Sensor Based on Polyaniline and Unsubstituted Pillar[5]Arene

Cited by 26 publications

References 44 publications

Synthesis of Tris-pillar[5]arene and Its Association with Phenothiazine Dye: Colorimetric Recognition of Anions

Synthesis of Tris-pillar[5]arene and Its Association with Phenothiazine Dye: Colorimetric Recognition of Anions

Organic Acid and DNA Sensing with Electrochemical Sensor Based on Carbon Black and Pillar[5]arene

Electrochemically Generated Recognition Sites in Self‐doped Polyaniline Modified Electrodes for Voltammetric and Potentiometric Determination of Copper(II) Ion

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