Potential responses to neutral thiophenols of polymeric membrane electrodes and their applications in potentiometric biosensing

Unexpected potential responses to electrically neutral thiophenols of anion-exchanger doped polymeric membranes have been observed and applied in potentiometric biosensing of horseradish peroxidase.

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The Long-Lasting Story of One Sensor Development: From Novel Ionophore Design toward the Sensor Selectivity Modeling and Lifetime Improvement

Sensors ◽

10.3390/s21041401 ◽

2021 ◽

Vol 21 (4) ◽

pp. 1401

Author(s):

Larisa Lvova ◽

Donato Monti ◽

Corrado Di Natale ◽

Roberto Paolesse

Keyword(s):

Anion Exchanger ◽

Specific Interaction ◽

Spectroscopic Studies ◽

Polymeric Membranes ◽

Polymeric Membrane ◽

Active Components ◽

Nitrite Ion ◽

Working Mechanism ◽

Axial Coordination ◽

Porphyrin Aggregation

The metalloporphyrin ligand bearing incorporated anion-exchanger fragment, 5-[4-(3-trimethylammonium)propyloxyphenyl]-10,15,20-triphenylporphyrinate of Co(II) chloride, CoTPP-N, has been tested as anion-selective ionophore in PVC-based solvent polymeric membrane sensors. A plausible sensor working mechanism includes the axial coordination of the target anion on ionophore metal center followed by the formed complex aggregation with the second ionophore molecule through positively charged anion-exchanger fragment. The UV-visible spectroscopic studies in solution have revealed that the analyte concentration increase induces the J-type porphyrin aggregation. Polymeric membranes doped with CoTPP-N showed close to the theoretical Nernstian response toward nitrite ion, preferably coordinated by the ionophore, and were dependent on the presence of additional membrane-active components (lipophilic ionic sites and ionophore) in the membrane phase. The resulting selectivity was a subject of specific interaction and/or steric factors. Moreover, it was demonstrated theoretically and confirmed experimentally that the selection of a proper ratio of ionophore and anionic additive can optimize the sensor selectivity and lifetime.

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Polymeric membrane electrodes for selective determination of the central nervous system acting drugs fluphenazine hydrochloride and nortriptyline hydrochloride

Analytica Chimica Acta ◽

10.1016/s0003-2670(00)00941-7 ◽

2000 ◽

Vol 418 (1) ◽

pp. 93-100 ◽

Cited By ~ 21

Author(s):

N.A. El-Ragehy ◽

A.M. El-Kosasy ◽

S.S. Abbas ◽

S.Z. El-Khateeb

Keyword(s):

Central Nervous System ◽

Nervous System ◽

Polymeric Membrane ◽

Membrane Electrodes ◽

Selective Determination ◽

The Central Nervous System ◽

Nortriptyline Hydrochloride

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Polymeric membrane electrodes for drug analysis

Journal of Pharmaceutical and Biomedical Analysis ◽

10.1016/0731-7085(88)80083-9 ◽

1988 ◽

Vol 6 (6-8) ◽

pp. 717-723 ◽

Cited By ~ 9

Author(s):

Luigi Campanella ◽

Mauro Tomassetti ◽

Franco Mazzei ◽

Riccardo Sbrilli

Keyword(s):

Drug Analysis ◽

Polymeric Membrane ◽

Membrane Electrodes

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Gallium(III)-Schiff Base Complexes as Novel Ionophores for Fluoride Selective Polymeric Membrane Electrodes

Electroanalysis ◽

10.1002/elan.200503284 ◽

2005 ◽

Vol 17 (15-16) ◽

pp. 1347-1353 ◽

Cited By ~ 11

Author(s):

Jeremy T. Mitchell-Koch ◽

Elzbieta Malinowska ◽

Mark E. Meyerhoff

Keyword(s):

Schiff Base ◽

Schiff Base Complexes ◽

Polymeric Membrane ◽

Membrane Electrodes

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Potentiometric polymeric membrane electrodes for mercury detection using calixarene ionophores

Water Science & Technology ◽

10.2166/wst.2010.860 ◽

2010 ◽

Vol 61 (3) ◽

pp. 693-704 ◽

Cited By ~ 10

Author(s):

Sonika Tyagi ◽

Himanshu Agarwal ◽

Saiqa Ikram

Keyword(s):

Heavy Metal Ions ◽

Aqueous Media ◽

Active Material ◽

Potential Method ◽

Fast Response ◽

Analytical Tool ◽

Polymeric Membrane ◽

Membrane Electrodes ◽

Industrial Waste Water ◽

Mercury Detection

It is here established that potentiometric polymeric membrane electrodes based on electrically neutral ionophores are a useful analytical tool for the detection of heavy metal ions from environmental and industrial waste water. PVC based membrane containing p-tert-butyl-calix[4]arenethioether derivative as active material along with sodiumtetraphenylborate (NaTPB) as solvent mediator and dibutylphthalate as a plasticizer in the ratio 45:9:460:310 (w/w%) (I:NaTPB:DBP:PVC) exhibits good properties with a Nernstian response of 29.50±1.0 mV per decade of activity and a working concentration range of 7.2 × 10−8–1.0 × 10−1 M. The electrode gave more stable potential readings when used around pH 2.5–6.8 and exhibits fast response time of 14 s. The sensors were found to work satisfactorily in partially non-aqueous media up to 40% (v/v) content of acetone, methanol or ethanol and could be used over a period of 7–9 months. Excellent selectivity for Hg2+ ions is indicated by match potential method and fixed interference method. The sensors could be used successfully in the estimation of mercury in different sample.

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Investigation of Silver(I) Ion Sensing Property of Ruthenium(II) Thiosemicarbazone Complex Using Coated Graphite and Polymeric Membrane Electrodes

Zeitschrift für anorganische und allgemeine Chemie ◽

10.1002/zaac.200800155 ◽

2008 ◽

Vol 634 (9) ◽

pp. 1626-1632 ◽

Cited By ~ 12

Author(s):

Rakesh Kumar Mahajan ◽

Rajiv Kumar Puri ◽

Gagandeep Bawa ◽

Tarlok Singh Lobana

Keyword(s):

Polymeric Membrane ◽

Membrane Electrodes ◽

Ion Sensing

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Effects of Ionic Liquid Blending in Polymeric Membrane: Physical Properties and Performance Evaluation

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.625.680 ◽

2014 ◽

Vol 625 ◽

pp. 680-684 ◽

Cited By ~ 2

Author(s):

Dzeti Farhah Mohshim ◽

Hilmi Mukhtar ◽

Zakaria Man

Keyword(s):

Ionic Liquid ◽

Ionic Liquids ◽

Membrane Separation ◽

Initial Study ◽

Polymeric Membranes ◽

Polymeric Membrane ◽

Separation Performance ◽

Operating Pressure ◽

Membrane Gas Separation ◽

Pes Membrane

— Polymeric membranes have been extensively used in membrane gas separation process. Nowadays, peoples are modifying the membrane by many ways like coating with ionic liquids to further enhance the membrane separation performance. In this project, ionic liquid modified polymeric membranes (ILMPM) have been successfully developed by blending the ionic liquids with the polymer via solvent evaporation method. The ionic liquid used was 1-ethyl-3-methylimidazolium bis (trifluoromethylsulfonyl) imide, ([emim][Tf2N]) and for comparison purpose, the compositions were varied at 10 and 20 wt/wt%. In general, the blending of [emim][Tf2N] and PES has produced dense membrane with miscible mixture without any phase separation. It was observed that, the CO2permeance of ILMPM has been improved about 271% as compared to the pure PES membrane. However, the CO2permeance decreased with increasing operating pressure, yet the ILMPM CO2permeance still higher than CO2permeance of pure PES membrane. In addition, the CO2/CH4separation performance has greatly increased about 162% as the IL composition is increased. This initial study has proven that IL helps to enhance of CO2permeation and improve selectivity.

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