Potentiometric study of complexation of phenylaza-15-crown-5, 4-nitrobenzo-15-crown-5 and dibenzopyridino-18-crown-6 and other derivative of 18-crowns-6 with Na+ ion in methanol

Zolgharnein, Javad; Shahmoradi, Ghasem; Zamani, Khosrow; Amani, Saeid

doi:10.1007/s10847-007-9301-8

Cited by 11 publications

(2 citation statements)

References 25 publications

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“…Therefore, anion interaction with p-electrons in benzene ring can decrease the complex formation constant and then it decreases initial flux and P and RF% of L3 compared to L2. On the other hand electron withdrawing effect of nitro group considerably decreases the complex formation constant [26,27]. Ulewicz, et al found that the initial fluxes of transported metal ions under competitive conditions depend on the HLB of crown ethers [28].…”

Section: Resultsmentioning

confidence: 99%

Kinetics study of selective removal of lead(II) in an aqueous solution containing lead(II), copper(II) and cadmium(II) across bulk liquid membrane

2012

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Section: Resultsmentioning

confidence: 99%

Kinetics study of selective removal of lead(II) in an aqueous solution containing lead(II), copper(II) and cadmium(II) across bulk liquid membrane

2012

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“…Macrocyclic compounds with interesting structures and unique physical and chemical properties include an increasing number of natural compounds, such as valinomycin and cyclodextrins, and synthetic compounds, for instance, crown ethers, with the ability to selectively bind ions. Moreover, it can be noted that there are relatively few electrodes with crown ethers that have been developed for the purpose of determining medicinal substances [33,34] compared with electrodes sensitive to simple ions [35][36][37][38]. Cyclodextrins are a more popular group that forms complexes with various organic compounds used in potentiometric response mechanisms.…”

Section: Composition Of Membrane and Electrode Performancementioning

confidence: 99%

A Novel Polymeric Membrane Sensor for Chlorhexidine Determination

Lenik,

Sokal

2023

Sensors

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In the present work, potentiometric sensors with polymer membranes used for chlorhexidine (CHXD) determination were developed. The polymer membranes were plasticized with bis(2-ethylheksyl)sebacate (DOS) or 2-nitrophenyloctyl ether (o-NPOE). The active compounds used in the membrane were cyclodextrins, crown ethers, and ion exchangers. The best-constructed electrode was based on neutral heptakis(2,3,6-tri-O-benzoyl)-β-cyclodextrin with lipophilic salt (KTpClBP)—potassium tetrakis(4-chlorophenyl) borate—dissolved in plasticizer, DOS. The presented electrode is characterized by an average cationic slope of 30.9 ± 2.9 mV decade−1 within a linear range of 1 × 10−6 to 1 × 10−3 mol × L−1, while the value of the correlation coefficient is 0.9970 ± 0.0026. The response time was about 5 s when increasing the sample concentration and about 10 s when diluting the sample. The electrode potential is independent of the pH within a range of 4.0–9.5. The polymeric membrane sensor was successfully applied for assays of chlorhexidine digluconate in pure samples and pharmaceutical samples. The relative error from three replicate measurements was determined to be 1.1%. and the accuracy was RSD = 0.3–1.1%.

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Multimodal Metal Cation Sensing with Bis(macrocyclic) Dye

Tulyakova

Delbaere

Fedorov

et al. 2011

Chemistry A European J

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The synthesis, electrochemical, optical, and cation sensing properties of a bis(macrocyclic) dye 1, in which the benzo-15-crown-5 and phenylazathia-15-crown-5 subunits are linked through a styryl pyridinium moiety, are reported. In this new ditopic receptor, the benzo-15-crown-5 macrocycle acts as a highly selective binding site for alkaline earth metal cations (Mg(II) and Ba(II)), whereas the phenylazathia-15-crown-5 displays a strong binding affinity towards soft heavy-metal cations (Hg(II) and Ag(I)). The pronounced changes of the absorption and fluorescence spectra of this bichromophoric dye observed upon different metal cation addition make the dye suitable for dual-wavelength analysis and offer an enticing potential for multitasking sensors.

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Potentiometric study of complexation of phenylaza-15-crown-5, 4-nitrobenzo-15-crown-5 and dibenzopyridino-18-crown-6 and other derivative of 18-crowns-6 with Na+ ion in methanol

Cited by 11 publications

References 25 publications

Kinetics study of selective removal of lead(II) in an aqueous solution containing lead(II), copper(II) and cadmium(II) across bulk liquid membrane

Kinetics study of selective removal of lead(II) in an aqueous solution containing lead(II), copper(II) and cadmium(II) across bulk liquid membrane

A Novel Polymeric Membrane Sensor for Chlorhexidine Determination

Multimodal Metal Cation Sensing with Bis(macrocyclic) Dye

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