Salicylate-selective membrane electrodes based on Sn(IV)- and OMo(V)-porphyrins: differences in response mechanism and analytical performance

Malinowska, Elżbieta; Niedziolka, Joanna; Roźniecka, Ewa; Meyerhoff, Mark E.

doi:10.1016/s0022-0728(01)00615-5

Cited by 47 publications

(31 citation statements)

References 39 publications

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“…Thin films of polymeric membranes of the same composition as was used for potentiometric measurements were deposited on glass slides (50 mm × 8 mm × 1 mm) according to the method already described. 29,30 The glass slides covered with thin films of polymeric membranes then placed into a quartz cuvette containing 2.0 ml of milli-Q water. The concentration of Pb 2+ was changed by adding a stock solution of 1.0 M Pb(NO3)2.…”

Section: Spectroscopic Measurementsmentioning

confidence: 99%

“…This technique has been already applied for the study of the changes of the organic-PVC membrane composition upon equilibration with the aqueous solution of analytes. 29,30 The polymeric membrane, with the composition identical to that used for the potentiometric measurements, was deposited onto a clean glass slide. After THF evaporation, the glass slide was put into a quartz cuvette and dipped into 2.0 ml of milli-Q water.…”

Section: Spectroscopic Measurementsmentioning

confidence: 99%

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Oligocarbazoles as Ligands for Lead-selective Liquid Membrane Electrodes

et al. 2004

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Ionophore-based liquid-membrane ion-selective electrodes (ISEs), because of their versatility and low cost, are becoming widely used for many applications as electrochemical sensors. The selectivity of ISEs is governed by specific receptors, immobilized in an organic membrane, which are responsible for the molecular recognition of the analyte at the aqueous/organic interface. 1-3The strong need for the selective determination of Pb 2+ in environment monitoring, food technology and clinical analysis still stimulates research that seeks suitable ionophore designs which would allow one to improve the selectivity and detection limits.Several types of ionophores including thiacrown ethers, 4,5 methoxy-substituted arylenevinylene derivatives, 6,7 diazacrown ethers, 8 calixarene phosphine oxide, 9 macrocyclic amides, 10 oxamides, acyclic dithiocarbamates, 11,12 were used for detection of lead(II) ions. Here we report on a sensing system involving oligocarbazoles ( Fig. 1) that, to our knowledge, have been applied for the first time as Pb 2+ -selective ionophores in ISEs. Carbazoles and oligocarbazoles are compounds whose syntheses, molecular and photorefractive properties, and also electrochemical behavior are still being studied. [13][14][15] In view of their unique optical and electrical properties, carbazole derivatives have found applications in polymer films for the construction of biosensors. [16][17][18] Considerable effort is currently invested in the improvement of the selectivity and detection limits of ISEs. [19][20][21][22] The success within this research area and the possibilities of miniaturized sensors based on ion-selective liquid membranes 23-25 make potentiometric sensors a promising alternative for other analytical methods and justify the requirements to design new, selective ionophores. In this context, oligocarbazoles derivatives, studied as a new class of ionophores for potentiometric determination of lead ions in water samples, is the main objective of the research presented. Warmia and Mazury, Faculty of Environmental Sciences and Fisheries, Oczapowskiego 5, Olsztyn, Poland ***University of Leuven, Department of Chemistry, Celestijnenlaan 200F, 3001 Leuven, Belgium Oligocarbazoles have been applied as new ionophores in liquid membrane electrodes (ISEs) destined for lead(II) determination in water samples. The oligocarbazole-containing ISEs demonstrated a close-to-Nernstian potentiometric response towards Pb 2+ in the activity range 10 -7 -10 -2 M. The selectivity coefficients measured by the matched potential method (MPM) confirmed their good selectivity against common interfering mono-and doubly charged cations. The oligocarbazole-containing ISEs do not respond towards protons. Their applicability has been checked by performing the recovery test while using a sample of wastewater.

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Section: Spectroscopic Measurementsmentioning

confidence: 99%

Section: Spectroscopic Measurementsmentioning

confidence: 99%

Oligocarbazoles as Ligands for Lead-selective Liquid Membrane Electrodes

et al. 2004

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“…ISEs are also of obvious interest because they can help translate the chemistry of new substrate binding systems into tools that can be used to recognize selectively various targeted species in the presence of potentially interfering analytes. In the specific case of anion recognition, this approach has been explored extensively by Umezawa, Meyerhoff, Simon, Reinhoudt, Schmidtchen and others using a range of receptors including bis-guanidinium [1][2], porphyrins [3], protonated polyamines [4][5][6][7], and protonated sapphyrins [8][9][10], as well as a variety of Lewis acidic systems such as calixarenes [11][12][13][14][15], uranylsalenophenes [16][17], metalloporphyrins [18][19][20][21][22], metallocenes [23], other organometallic derivatives [24][25][26], and fluorinated compounds [27].…”

Section: Introductionmentioning

confidence: 99%

“…The carboxylate group and aromatic core present in the salicylate anion makes it potentially capable of entering into ion-pairing, hydrogen bonding, and π-stacking interactions with a putative receptor. Indeed, the salicylate anion has previously been the subject of analysis-based recognition efforts, including ones focused on the selective coordination to tetraphenylporphyrin [20,[28][29][30][31], phthalocyanine [32][33][34], and salophenes [35] metal centers. The supramolecular interaction properties of salicylate have been exploited in the case of anion-exchange- [36][37][38], calix [4]phyrin- [39] and guanidinium derivative-based [1] polymeric membranes.…”

Section: Introductionmentioning

confidence: 99%

Potentiometric response and mechanism of anionic recognition of heterocalixarene-based ion selective electrodes

Shishkanova

Sýkora

Sessler

et al. 2007

Analytica Chimica Acta

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The ion selective electrode (ISE)-based potentiometric approach is shown to be an effective means of characterizing the anion recognition sites in the molecular receptor calix[2]pyridino[2]pyrrole (CPP). In particular, potentiometric pH-measurements involving the use of experimental PVCmembranes based on CPP revealed the existence of both mono-and diprotonated forms of the receptor under readily accessible conditions. Based on these analyses, apparent surface protonation constants for this heterocalixarene were found to lie between 8.5-8.9 (pK B1 ) and 3.3-3.8 (pK B2 ). CPP was found to interact with targeted anionic analytes based on both coulombic and hydrogen bond interactions, as inferred from varying the kinds of ionic sites present within the membrane phase. Potentiometric selectivity studies revealed that CPP preferred "Y-shaped" anions (e.g. acetate, lactate, benzoate) over spherical anions (e.g. fluoride and chloride), fluoride over chloride within the set of spherical anions, and the ortho-isomer over the corresponding meta-and para-isomers in the case of hydroxybenzoate (salicylate and congeners). In the context of this study the advantages of potentiometric determinations of acetylsalicylic acid using optimized PVC-membranes based on CPP relative to more conventional PVC-membrane ISEs based on traditional anion exchanger were also demonstrated.

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“…23 In recent years the electrochemical properties and preparations of several new salicylate selective electrodes have been reported by using a variety of ion carriers. 17,[20][21][22] In our present work, a new binuclear carrier N,N'-(aminoethyl)ethylenediamide bis(2-salicylideneimine) binuclear copper(II) was synthesized (Scheme 1). The proposed membrane electrode based on binuclear copper(II) complex [Cu(II) 2 -AEBS] displaying anti-Hofmeister selectivity sequence, offers the advantages of simple design and operation, relatively fast response and low cost.…”

Section: Introductionmentioning

confidence: 99%

Highly Selective Salicylate Membrane Electrode Based onN,N′‐(Aminoethyl)ethylenediamide Bis(2‐salicylideneimine) Binuclear Copper(II) Complex as Neutral Carrier

Sun¹,

Cai²,

Yuan³

et al. 2006

Chin. J. Chem.

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A new ion selective electrode for salicylate based on N, N'-(aminoethyl) The proposed sensor based on binuclear copper(II) complex has a fast response time of 5-10 s and can be used for at least 2 months without any major deviation. The response mechanism is discussed in view of the alternating current (AC) impedance technique and the UV-vis spectroscopy technique. The effect of the electrode membrane compositions and the experimental conditions were studied. The electrode has been successfully used for the determination of salicylate ion in drug pharmaceutical preparations.

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Salicylate-selective membrane electrodes based on Sn(IV)- and OMo(V)-porphyrins: differences in response mechanism and analytical performance

Cited by 47 publications

References 39 publications

Oligocarbazoles as Ligands for Lead-selective Liquid Membrane Electrodes

Oligocarbazoles as Ligands for Lead-selective Liquid Membrane Electrodes

Potentiometric response and mechanism of anionic recognition of heterocalixarene-based ion selective electrodes

Highly Selective Salicylate Membrane Electrode Based onN,N′‐(Aminoethyl)ethylenediamide Bis(2‐salicylideneimine) Binuclear Copper(II) Complex as Neutral Carrier

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