Electrochemical Sensors Based on Electropolymerized Films

Xu, Qin; Hu, Xiaoyun; Hao, Shirong

doi:10.5772/28560

Cited by 9 publications

(6 citation statements)

References 26 publications

(27 reference statements)

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“…Monomer concentration and electrolysis parameters play role in polymeric coverage formation and its properties. 12,13,44 High monomer concentration can lead to non-uniform and unordered polymeric structure blocking electron transfer while less concentrated monomer solutions allows obtaining thin ordered films. 45 The changes of EA concentration (Fig.…”

Section: Resultsmentioning

confidence: 99%

The Selective Electrochemical Sensing of Naringin Using Electropolymerized Ellagic Acid Film

Ziyatdinova

Yakupova

Guss

et al. 2020

J. Electrochem. Soc.

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Electrochemical sensor on the basis of glassy carbon electrode (GCE) covered with multi-walled carbon nanotubes and electropolymerized ellagic acid (polyEA/MWNT/GCE) has been developed for the naringin determination. Polymeric film has been obtained by potentiodynamic electrolysis. The working conditions of polymeric coverage formation (scans number, supporting electrolyte pH, monomer concentration and electrolysis parameters) providing the best naringin response have been found. Ellagic acid (EA) electropolymerization has to be performed from 10 μM monomer by sevenfold cycling of potential in the range of 0.0-1.0 V at the scan rate of 100 mV s −1 in phosphate buffer (PB) pH 7.0. Scanning electron microscopy (SEM) confirms successful modification of the sensor surface with evenly distributed 30-50 nm spherical particles providing 9.6-fold increase of the electrode effective surface area vs GCE. Naringin electrooxidation parameters on polyEA/MWNT/GCE have been found. Sensor acting under conditions of differential pulse voltammetry in PB pH 6.5 provides linear dynamic ranges of 0.050-1.0 and 1.0-100 μM with the detection and quantification limits of 14 and 47 nM, respectively. The selectivity of sensor towards naringin in the presence of inorganic ions, saccharides, hesperidin, ascorbic and phenolic acids is proved. The sensor developed has been successfully tested on grapefruit juices.

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Section: Resultsmentioning

confidence: 99%

The Selective Electrochemical Sensing of Naringin Using Electropolymerized Ellagic Acid Film

Ziyatdinova

Yakupova

Guss

et al. 2020

J. Electrochem. Soc.

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“…Polymers have unparalleled properties that make them attract attention [194][195][196][197]. Their EC properties qualify them to be used as active sensing materials for biosensors.…”

Section: Polymer-based Ec Sensormentioning

confidence: 99%

Recent Advances in Electrochemical and Optical Sensing of Dopamine

Eddin

Fen

2020

Sensors

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Nowadays, several neurological disorders and neurocrine tumours are associated with dopamine (DA) concentrations in various biological fluids. Highly accurate and ultrasensitive detection of DA levels in different biological samples in real-time can change and improve the quality of a patient’s life in addition to reducing the treatment cost. Therefore, the design and development of diagnostic tool for in vivo and in vitro monitoring of DA is of considerable clinical and pharmacological importance. In recent decades, a large number of techniques have been established for DA detection, including chromatography coupled to mass spectrometry, spectroscopic approaches, and electrochemical (EC) methods. These methods are effective, but most of them still have some drawbacks such as consuming time, effort, and money. Added to that, sometimes they need complex procedures to obtain good sensitivity and suffer from low selectivity due to interference from other biological species such as uric acid (UA) and ascorbic acid (AA). Advanced materials can offer remarkable opportunities to overcome drawbacks in conventional DA sensors. This review aims to explain challenges related to DA detection using different techniques, and to summarize and highlight recent advancements in materials used and approaches applied for several sensor surface modification for the monitoring of DA. Also, it focuses on the analytical features of the EC and optical-based sensing techniques available.

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“…147,157 Electropolymerization method has been paid the most attention because it permits the regulation of the spatial location and selective control of the material properties through variation of the polymer monomer, the potential window, and the electrolytic conditions during the electrodeposition process. 158 In addition, this method also provides a simple, fast, and direct procedure. A report by Liu et al described the electropolymerization process to fabricate PVP/graphene on top of GCE surface.…”

Section: Graphene-polymer Composite As Electrochemical Sensormentioning

confidence: 99%

Graphene and its nanocomposite material based electrochemical sensor platform for dopamine

et al. 2014

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Dopamine (DA) is an important catecholamine neurotransmitter in the mammalian central nervous system that influences several physiological functions. The impact of DA levels within the human body significantly affects the body functions. Maintaining DA level is essential and the electrochemical detection methods are often used to detect the DA level to regulate the body function. In this review, graphene (functionalized graphene and N-doped graphene) and its composites (metal, metal oxide, polymer, carbonaceous materials, clay, zeolite, and metal-organic framework based graphene composites) modified electrodes with their improved sensing performance towards DA along with several interfering species are described. Further, recent developments on the fabrication of various graphene based composite modified electrodes are also presented. Some important strategies to improve the selectivity and sensitivity towards DA with graphene based composite modified electrodes are also described.

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Electrochemical Sensors Based on Electropolymerized Films

Cited by 9 publications

References 26 publications

The Selective Electrochemical Sensing of Naringin Using Electropolymerized Ellagic Acid Film

The Selective Electrochemical Sensing of Naringin Using Electropolymerized Ellagic Acid Film

Recent Advances in Electrochemical and Optical Sensing of Dopamine

Graphene and its nanocomposite material based electrochemical sensor platform for dopamine

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