Covalent binding of sensor phases - a recipe for stable potentials of solid-state ion-selective sensors

Grygołowicz‐Pawlak, Ewa; Pałys, Barbara; Biesiada, K.; Olszyna, A.; Malinowska, Elżbieta

doi:10.1016/j.aca.2008.07.019

Cited by 10 publications

(9 citation statements)

References 27 publications

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“…Basic potentiometric properties of ion-selective electrodes (slope of calibration curve, selectivity or response time) were not affected by chemical attachment of ion-selective membrane to the transducer surface (see Table 2). Long-term studies confirmed results obtained via cyclic voltammetry for SAM I þ IV and revealed pure protective properties of this layer [27]. Although the stability of working parameters of electrodes modified with this monolayer were much better than for electrodes where membrane was deposited directly on transducer surface still significant potential drift was observed.…”

Section: Intermediate Layers For Improved Performance Of Ssessupporting

confidence: 57%

“…Studies applying FTIR spectroscopy and atomic force microscopy verified high order of acrylate monolayers, although cyclic voltammetry revealed, that only the one with aromatic spacer fully protect gold electrode from contact with electrolyte [27]. Basic potentiometric properties of ion-selective electrodes (slope of calibration curve, selectivity or response time) were not affected by chemical attachment of ion-selective membrane to the transducer surface (see Table 2).…”

Section: Intermediate Layers For Improved Performance Of Ssesmentioning

confidence: 88%

“…This time it was based on the idea of chemical attachment of all three phases of solidstate sensor (membrane, monolayer and inner gold electrode). Due to the fact, that membrane applied for electrodes preparation was obtained within photopolymerization process from acrylate monomers, the incorporation of thiols containing terminal acrylate group into the redox-active monolayer was proposed [27]. Structures of designed molecules are presented in Figure 5.…”

Section: Intermediate Layers For Improved Performance Of Ssesmentioning

confidence: 99%

See 2 more Smart Citations

Potentiometric Studies and Various Applications of Solid State Electrodes Based on Silicon and Epoxy Glass Structures – an Overview

et al. 2009

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Potentiometric microelectrodes are attractive sensor tools for the determination of ionic components in liquids, in wide area of applications, from environmental monitoring to medical diagnostics. Appropriate design of miniaturized transducers based on solid-state technology and the fabrication of dedicated flow multiparameter systems allow the reduction of sample volume and reagents loss. In this overview various examples of the design, performance, and applications of solid-state potentiometric microelectrodes based on back-side contact transducers for flow-cell analysis are presented. The presented results summarize the research works on that field that were conduced in CSRG/Warsaw University of Technology.

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Section: Intermediate Layers For Improved Performance Of Ssessupporting

confidence: 57%

Section: Intermediate Layers For Improved Performance Of Ssesmentioning

confidence: 88%

Section: Intermediate Layers For Improved Performance Of Ssesmentioning

confidence: 99%

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Potentiometric Studies and Various Applications of Solid State Electrodes Based on Silicon and Epoxy Glass Structures – an Overview

et al. 2009

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“…This assumption is confirmed by the latest publications in the field [6][7][8]. The first attempt to obtain a solid-state ion sensor with acrylate-based membrane on a gold electrode modified with a monolayer combining both the ferrocene-and acrylate-terminated thiols to enhance the adhesion and prevent water layer formation was reported in [9], but this approach did not undergo further evolution.…”

Section: Introductionsupporting

confidence: 57%

Application of Photocured Polymer Ion Selective Membranes for Solid-State Chemical Sensors

Abramova

Bratov

2015

Chemosensors

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Application of conducting polymers with additional functional groups for a solid contact formation and photocurable membranes as sensitive elements of solid-state chemical sensors is discussed. Problems associated with application of UV-curable polymers for sensors are analyzed. A method of sensor fabrication using copolymerized conductive layer and sensitive membrane is presented and the proof of concept is confirmed by two examples of solid-contact electrodes for Ca ions and pH.

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“…To eliminate unwanted leakage of ionophore, strategies involving immobilization/ covalent attachment were proposed, helping also to prevent other processes occurring between ionophore molecules as e.g., dimerization [ 98 , 129 , 130 , 131 , 132 ]. On the other hand, mechanical instability of the sensor as such (e.g., detachment of phases in the case of SC) can also affect performance of potentiometric sensors [ 80 , 133 , 134 ], and a possible remedy to avoid this effect is covalent binding of sensor phases [ 135 , 136 ].…”

Section: Pretreatment and Operationmentioning

confidence: 99%

Unintended Changes of Ion-Selective Membranes Composition—Origin and Effect on Analytical Performance

2020

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Ion-selective membranes, as used in potentiometric sensors, are mixtures of a few important constituents in a carefully balanced proportion. The changes of composition of the ion-selective membrane, both qualitative and quantitative, affect the analytical performance of sensors. Different constructions and materials applied to improve sensors result in specific conditions of membrane formation, in consequence, potentially can result in uncontrolled modification of the membrane composition. Clearly, these effects need to be considered, especially if preparation of miniaturized, potentially disposable internal-solution free sensors is considered. Furthermore, membrane composition changes can occur during the normal operation of sensors—accumulation of species as well as release need to be taken into account, regardless of the construction of sensors used. Issues related to spontaneous changes of membrane composition that can occur during sensor construction, pre-treatment and their operation, seem to be underestimated in the subject literature. The aim of this work is to summarize available data related to potentiometric sensors and highlight the effects that can potentially be important also for other sensors using ion-selective membranes, e.g., optodes or voltammetric sensors.

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Covalent binding of sensor phases - a recipe for stable potentials of solid-state ion-selective sensors

Cited by 10 publications

References 27 publications

Potentiometric Studies and Various Applications of Solid State Electrodes Based on Silicon and Epoxy Glass Structures – an Overview

Potentiometric Studies and Various Applications of Solid State Electrodes Based on Silicon and Epoxy Glass Structures – an Overview

Application of Photocured Polymer Ion Selective Membranes for Solid-State Chemical Sensors

Unintended Changes of Ion-Selective Membranes Composition—Origin and Effect on Analytical Performance

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