Potentiometric Ion Sensors

Bobacka, Johan; Ivaska, and Ari; Lewenstam, Andrzej

doi:10.1021/cr068100w

Cited by 879 publications

(711 citation statements)

References 301 publications

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“…As a key component, the solid contact plays a critical role in the electrode characteristics, such as linear response range, selectivity and potential stability in particular [3][4][5]. Until now, many kinds of materials, including redox-active monolayers [6], carbon materials [7][8][9][10][11], and conducting polymers (CPs) [12] have been introduced between the conducting substrates and the ion-selective membranes to obtain thermodynamically defined electrochemical interfaces.…”

Section: Introductionmentioning

confidence: 99%

A solid-contact Pb2+-selective electrode using poly(2-methoxy-5-(2′-ethylhexyloxy)-p-phenylene vinylene) as ion-to-electron transducer

Yin

et al. 2011

Analytica Chimica Acta

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a b s t r a c tIn this work, a novel all-solid-state polymeric membrane Pb 2+ -selective electrode was developed by using for the first time poly(2-methoxy-5-(2 -ethylhexyloxy)-p-phenylene vinylene) (MEH-PPV) as solid contact. To demonstrate the ion-to-electron transducing ability of MEH-PPV, chronopotentiometry and electrochemical impedance spectroscopy measurements were carried out. The proposed electrodes showed a Nernstian response of 29.1 mV decade −1 and a lower detection limit of subnanomolar level. No water film was observed with the conventional plasticized PVC membrane. This work demonstrates a new strategy for the fabrication of robust potentiometric ion sensors.

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Section: Introductionmentioning

confidence: 99%

A solid-contact Pb2+-selective electrode using poly(2-methoxy-5-(2′-ethylhexyloxy)-p-phenylene vinylene) as ion-to-electron transducer

Yin

et al. 2011

Analytica Chimica Acta

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“…However, due to the presence of the inner filling solution, the traditional liquid-contact ion-selective electrodes suffer from disadvantages of inconvenience for miniaturization, difficulty in production and fragility to external pressure [4]. In recent years, all-solid-state ion-selective electrodes (ASS-ISEs), which are fabricated with the solid electronic conductors instead of the inner filling solutions and the inner reference electrode, have attracted much attention [5].…”

Section: Introductionmentioning

confidence: 99%

An effective solid contact for an all-solid-state polymeric membrane Cd 2+ -selective electrode: Three-dimensional porous graphene-mesoporous platinum nanoparticle composite

Yin

Qin

2017

Sensors and Actuators B: Chemical

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“…Ion-selective electrodes (ISEs) are most widely used chemical sensors in clinical diagnostics, process control and environmental monitoring due to their intrinsic advantages including excellent selectivity, low cost, ease of use, and high reliability [1][2][3]. Among these, solid-contact ISEs which eliminate the internal solution and are easily miniaturized have been recognized as the means by which the next ISE generation will be constructed.…”

Section: Introductionmentioning

confidence: 99%

“…The historical problem of poor potential stability between the ion-selective membrane and the conducting wire has been largely solved by the introduction of conducting polymers [8] such as poly(3-octylthiophene) (POT) [9,10], polypyrrole (PPy) [11], polythiophene [12], polyaniline [13], and poly (3,4-ethylenedioxythiophene) [14] as ion-to-electron transducers. Although the ISEs based on these transducing materials show benefits compared to those of traditional ISE with an internal solution, they also suffer from some drawbacks such as sensitivity to light, O 2 , CO 2 , and pH [3].…”

Section: Introductionmentioning

confidence: 99%

A simple approach for fabricating solid-contact ion-selective electrodes using nanomaterials as transducers

Liang

Yin

Qin

2015

Analytica Chimica Acta

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A general method for fabricating nanomaterials based solid-contact ISEs is developed. The mixture of an ionic liquid and a nanomaterial is used as intermediate layer.The detection limits of the proposed sensors are in the nanomolar range. The developed electrodes exhibit a good response time and excellent stability. A simple and robust approach for the development of solid-state ion-selective electrodes (ISEs) using nanomaterials as solid contacts is described. The electrodes are fabricated by using the mixture of an ionic liquid (IL) and a nanomaterial as intermediate layer, formed by melting the IL. Tetradodecylammonium tetrakis(4-chlorophenyl)borate (ETH 500) is chosen as an model of IL to provide strong adhesion between the inner glassy carbon electrode and the intermediate layer. Nanomaterials including single-walled carbon nanotubes (SWCNTs) and graphene were used as active ion-to-electron transducers between the glassy carbon electrode and the ionophore-doped ISE membrane. By using the proposed approach, the solid-contact Cu 2+ -and Pb 2+ -selective electrodes based on ETH 500/SWCNTs and ETH 500/ graphene as transducers, respectively, have been fabricated. The proposed electrodes show detection limits in the nanomolar range and exhibit a good response time and excellent stability.

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Potentiometric Ion Sensors

Cited by 879 publications

References 301 publications

A solid-contact Pb2+-selective electrode using poly(2-methoxy-5-(2′-ethylhexyloxy)-p-phenylene vinylene) as ion-to-electron transducer

A solid-contact Pb2+-selective electrode using poly(2-methoxy-5-(2′-ethylhexyloxy)-p-phenylene vinylene) as ion-to-electron transducer

An effective solid contact for an all-solid-state polymeric membrane Cd 2+ -selective electrode: Three-dimensional porous graphene-mesoporous platinum nanoparticle composite

A simple approach for fabricating solid-contact ion-selective electrodes using nanomaterials as transducers

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