Electrooxidation and Determination of Dopamine Using a Nafion®-Cobalt Hexacyanoferrate Film Modified Electrode

Castro, Sonia; Mortimer, Roger J.; Oliveira, Marcelo Firmino de; Stradiotto, Nelson Ramos

doi:10.3390/s8031950

Cited by 54 publications

(21 citation statements)

References 28 publications

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“…To date, composite polymer films were prepared with the precursors of conductive polymer, aniline/aniline sulfonic acid and ethylenedioxythiophene/aminonaphthalenesulfonic acid in order to introduce sulfonate groups in the polymer film [26,27]. Generally, charge-selective electrochemical detection of DA has been carried out using Nafion coated electrodes to avoid interference of AA [16,17]. However, a disadvantage of this method is the sensitivity of the modifier towards DA reduced by Nafion layer coating.…”

Section: Introductionmentioning

confidence: 99%

“…: +82 51 510 2244; fax: +82 51 514 2430. ids proceeds as a two-electron process, forming catecholamine o-quinones that can catalytically oxidize AA to regenerate DA, resulting in an increase in the oxidation signal of DA [9]. To solve these problems and enhance selectivity and sensitivity of the electroanalytical methods for DA, several kinds of electrode modification techniques have been developed [10][11][12][13][14][15][16][17]. Although some research has achieved success in this direction, it still demands much effort to develop a simple, selective, and sensitive method for DA detection.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Selective determination of dopamine with a cibacron blue/poly-1,5-diaminonaphthalene composite film

Abdel-Wahab¹,

Lee²,

Shim³

2009

Analytica Chimica Acta

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Selective determination of dopamine with a cibacron blue/poly-1,5-diaminonaphthalene composite film

Abdel-Wahab¹,

Lee²,

Shim³

2009

Analytica Chimica Acta

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“…Although the sensitivity of potentiometric sensors is generally lower than that of other electrochemical methods (e.g., CV, SWV, etc. ), the MBA-SAM-based sensor shows comparable sensitivity to that of other electrochemical sensors for histamine [76,77]. The sensitivity obtained might be derived from the complexation of histamine and the MBA molecule directly affecting the electric potential of the electrode through the conjugated backbone (benzene moiety) in the SAM [78].…”

Section: Electrochemical/electrical Detection Of Analytes For the Achmentioning

confidence: 80%

The Power of Assemblies at Interfaces: Nanosensor Platforms Based on Synthetic Receptor Membranes

Minamiki

Ichikawa

Kurita

2020

Sensors

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Synthetic sensing materials (artificial receptors) are some of the most attractive components of chemical/biosensors because of their long-term stability and low cost of production. However, the strategy for the practical design of these materials toward specific molecular recognition in water is not established yet. For the construction of artificial material-based chemical/biosensors, the bottom-up assembly of these materials is one of the effective methods. This is because the driving forces of molecular recognition on the receptors could be enhanced by the integration of such kinds of materials at the 'interfaces', such as the boundary portion between the liquid and solid phases. Additionally, the molecular assembly of such self-assembled monolayers (SAMs) can easily be installed in transducer devices. Thus, we believe that nanosensor platforms that consist of synthetic receptor membranes on the transducer surfaces can be applied to powerful tools for high-throughput analyses of the required targets. In this review, we briefly summarize a comprehensive overview that includes the preparation techniques for molecular assemblies, the characterization methods of the interfaces, and a few examples of receptor assembly-based chemical/biosensing platforms on each transduction mechanism.Synthetic receptors (i.e., artificial molecular recognition materials) are some of the most suitable platform materials for the development of chemical/biosensors owing to their chemical/physical stability, low cost of production, and their fine-tuning ability to select the required targets [4]. However, the preparation of artificial receptor-based sensors for practical applications is still in its initial stages, since the analyte specificity of most of the artificial materials is generally lower than that of biomaterials (i.e., antibodies and enzymes) [5]. To improve the binding affinity between the artificial receptors and the analytes, complicated synthesis procedures are required. Hence, a simpler way to improve the sensing ability of the artificial receptors should be considered to bring out the attractive features of these materials. To facilitate this, bottom-up integration of the receptors as molecular assemblies is considered as one of the most useful approaches for the construction of selective sensing fields for analytes. Moreover, the sensing features in the artificial receptor-based sensors could be finely tuned by using top-down technologies (e.g., molecular imprinting techniques [6], etc.) because the molecular recognition ability of the receptor assemblies depends on their nanostructures [7]. As aforementioned, the molecular assembly enhances the functions of a single kind of molecule ( Figure 1) [8]. In addition, the driving forces in molecular recognition (i.e., noncovalent interactions) can be amplified at the interfaces such as the boundary portion between the liquid and solid phases [9,10]. Thus, we believe that the installation of artificial receptors at the surface of the sensing portion in selective transducer...

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“…A common strategy to eliminate interferences is to cover the electrode with perm-selective membranes to limit access of the interferents to the reactive surface of the sensor. Membranes such as Nafion (Kang 1997, Jeong 2008) or a combination of Nafion and metal tetraaminophthalocyanine (Kang 1997) and hexacyanoferrates (Castro 2008) have been used. Nafion is anionic, and can be used to exclude negatively charged interfereces such as ascorbate (Jeong 2008) and nitrite.…”

Section: General Considerations For Designing Electrochemical Methodomentioning

confidence: 99%

Recent Developments in Electrochemical Sensors for the Detection of Neurotransmitters for Applications in Biomedicine

2015

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Neurotransmitters are important biological molecules that are essential to many neurophysiological processes including memory, cognition, and behavioral states. The development of analytical methodologies to accurately detect neurotransmitters is of great importance in neurological and biological research. Specifically designed microelectrodes or microbiosensors have demonstrated potential for rapid, real-time measurements with high spatial resolution. Such devices can facilitate study of the role and mechanism of action of neurotransmitters and can find potential uses in biomedicine. This paper reviews the current status and recent advances in the development and application of electrochemical sensors for the detection of small-molecule neurotransmitters. Measurement challenges and opportunities of electroanalytical methods to advance study and understanding of neurotransmitters in various biological models and disease conditions are discussed.

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Electrooxidation and Determination of Dopamine Using a Nafion®-Cobalt Hexacyanoferrate Film Modified Electrode

Cited by 54 publications

References 28 publications

Selective determination of dopamine with a cibacron blue/poly-1,5-diaminonaphthalene composite film

Selective determination of dopamine with a cibacron blue/poly-1,5-diaminonaphthalene composite film

The Power of Assemblies at Interfaces: Nanosensor Platforms Based on Synthetic Receptor Membranes

Recent Developments in Electrochemical Sensors for the Detection of Neurotransmitters for Applications in Biomedicine

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