In vivo measurements with a potassium ion-selective microelectrode based on a new bis(crown ether)

Tarcali, J.; Nagy, Géza; Tóth, Klára; Püngor, E.; Juhász, Gábor; Kukorelli, T

doi:10.1016/s0003-2670(00)86273-x

Cited by 23 publications

(10 citation statements)

References 8 publications

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“…Conventional micropipettes were used in earlier brain neurochemistry studies in the 1980s [18,23]. Employing neurotransmitter detecting voltammetric microelectrodes together with potassium ion selective electrodes [24] the different action mechanisms of different drugs could be detected.…”

Section: Recording Extracellular Potassium Levels In In Vivomentioning

confidence: 99%

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Solid Contact Micropipette Ion Selective Electrode II: Potassium Electrode for SECM and In Vivo Applications

et al. 2009

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Micropipette ion selective electrodes are very small, but fragile, short-life time sensors with very high resistance. Their high resistance is a draw back considering application in scanning electrochemical microscopy (SECM) and in life sciences. New, low resistance potassium micropipette electrodes were prepared, and applied. The electrode contains solid internal contact made of a carbon fiber lowered down all the way close to the orifice of the micropipette. The internal contact potential was kept constant by applying a doped, electrochemically prepared PEDOT coating on the fiber surface. The electrode performed well in in vivo experiments both in plant and animal tissue without capacitance neutralization and in SECM.

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Section: Recording Extracellular Potassium Levels In In Vivomentioning

confidence: 99%

“…In 1985 we reported a potassium micropipette electrode using the bis crown ether based ionophore, the BME 44 [18]. The electrode was used in life science experiments.…”

Section: Introductionmentioning

confidence: 99%

Solid Contact Micropipette Ion Selective Electrode II: Potassium Electrode for SECM and In Vivo Applications

et al. 2009

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“…The most successful member of this bis-crown ether family, the ligand BME 44 (2-dodecyl-2-methyl-1,3-propanediyl bis[N-[5'-nitro(benzo-15-crown-5)-4'-yl]carbamate]) [49], resulted in potassium selective electrodes with similar selectivity and response characteristics that the valinomycin-based potassium selective electrode [51]. However, the high lipophility of the BME 44 ionophore made it uniquely attractive for biological applications, especially in combination with microelectrodes [52] and a few micrometers thin optode membranes [53], in which the dissolution of the ionophore limits the ionselective membrane life time. The BME 44 ionophore is commercially available from Fluka as potassium ionophore III (Fluka 60397) and it is used in the potassium selective electrodes of the Horiba (Kyoto, Japan) blood electrolyte analyzers.…”

Section: Development Of Ionophore-based Potentiometric Sensorsmentioning

confidence: 99%

To the Memory of Ernő Pungor: A Subjective View on the History of Ion‐Selective Electrodes

Lindner

Tóth

2009

Electroanalysis

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In the Mátrafüred 08 Symposium on Electrochemical Sensors a session was dedicated to the memory of late Professor Ernő Pungor, the founder and long-term organizer of the Má trafüred conference series. We all remember him as an inventive scientist with an enthusiastic and witty personality, rich in ideas. Ernő Pungor left his mark in science and on many scientists worldwide. With this contribution, the authors would like to pay tribute to him and acknowledge his outstanding contributions to analytical chemistry, but especially his pioneering works in the field of ion-selective electrodes.

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“…Biscrown ether type neutral ionophore (BME 44), developed by Pungor's group, was found to be highly applicable to the production of potassium ionmeasuring micropipettes (Tarcali et al 1985). …”

Section: Micropipette Electrodesmentioning

confidence: 99%

Electrochemical Sensors Developed for Gathering Microscale Chemical Information

Nagy

2007

Analytical Letters

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Miniaturization is a broad trend that has been observed in various areas of technology. As a result of the intensive high tech research efforts of the past few decades in the electronics and telecommunication industries, different tools and technologies have been developed for creating highly structured miniaturized parts and units. These tools and technologies have also been employed for producing special miniaturized units for use in chemical analysis. Miniature sensors, flow micro channels, and detectors are becoming widespread devices in analytical laboratories. The lab-on-a-chip concept is gaining acceptance for a variety of applications.In many different areas of experimental science, researchers endeavor to collect chemical information with high spatial resolution about various subjects. Miniaturized electrochemical sensors and micro or ultramicro electrodes can be used for this purpose. A variety of microelectrodes have been developed and used to collect chemical information in the last few decades. Life scientists, who were studying various biochemical processes inside living tissues with microelectrodes, were pioneers in this work. Recently, a powerful new technique for collecting high resolution chemical information has been devised. This method is known as "scanning electrochemical microscopy." Scanning electrochemical microscopy relies on the electrochemical micro-measuring tip. In this short review, the properties of these microelectrodes are discussed briefly, and the types of ion-selective microelectrodes and voltammetric electrodes developed by several research groups for gathering high resolution information are introduced.

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In vivo measurements with a potassium ion-selective microelectrode based on a new bis(crown ether)

Cited by 23 publications

References 8 publications

Solid Contact Micropipette Ion Selective Electrode II: Potassium Electrode for SECM and In Vivo Applications

Solid Contact Micropipette Ion Selective Electrode II: Potassium Electrode for SECM and In Vivo Applications

To the Memory of Ernő Pungor: A Subjective View on the History of Ion‐Selective Electrodes

Electrochemical Sensors Developed for Gathering Microscale Chemical Information

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