A novel electrochemical biosensor for the determination of dopamine and ascorbic acid based on graphene oxide /poly(aniline-co-thionine) nanocomposite

Song, Nannan; Wang, Yinzhu; Yang, Xueyun; Zong, Hui-long; Chen, Yaxian; Ma, Zhen; Chen, Chuanxiang

doi:10.1016/j.jelechem.2020.114352

Cited by 63 publications

(23 citation statements)

References 32 publications

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“…Electrochemical polymerization at a scan rate of 50 mV s À 1 in a potential range of À 0.2 to 1.2 V Dopamine and ascorbic acid [121] PyO/AuNPs@Cu 2 O-DEs/ pâda-rGO/que Pyruvate oxidase (PyO)…”

Section: Graphene-based Materialsmentioning

confidence: 99%

Structure, Properties, and Electrochemical Sensing Applications of Graphene‐Based Materials

et al. 2020

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Owing to their versatility and unique characteristics, graphene‐based materials have been used extensively for the development of electrochemical sensors and biosensors. The key to the maximum potential of these materials is the understanding of the role their structure plays in their modification processes. Herein, we summarize some structural characteristics of graphene oxide (GO) and reduced graphene oxide (rGO) and explore different surface modification methods for electrochemical sensing applications. surveyed the most recent applications of these materials as (bio)sensors, particularly for environmental monitoring and health‐related applications, such as quantification of biomarkers and metabolites and detection of cancer cells. The low detection limits, selectivity toward target molecules, and robustness of GO‐ and rGO‐based electrodes render them critical materials for the preparation of sensors for routine analysis and monitoring.

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Section: Graphene-based Materialsmentioning

confidence: 99%

Structure, Properties, and Electrochemical Sensing Applications of Graphene‐Based Materials

et al. 2020

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“…Some common examples of such materials are silica [13,14], clay minerals [15,16], various carbon derivatives [17][18][19][20], and metal oxides [21,22]. Furthermore, additional studies also have highlighted the use of conjugated organic polymers (conductive polymers) as electrode modifiers in the fabrication of modified electrodes for the electroanalysis of various analytes [23,24]. Conducting polymers are organic compounds with considerable flexibility and an extended π-orbital system, through which electrons can move from one end of the polymer to the other.…”

Section: Introductionmentioning

confidence: 99%

Hydroxyapatite/L-Lysine Composite Coating as Glassy Carbon Electrode Modifier for the Analysis and Detection of Nile Blue A

et al. 2022

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An amperometric sensor was developed by depositing a film coating of hydroxyapatite (HA)/L-lysine (Lys) composite material on a glassy carbon electrode (GCE). It was applied for the detection of Nile blue A (NBA). Hydroxyapatite was obtained from snail shells and its structural properties before and after its combination with Lys were characterized using X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), and Brunauer–Emmett–Teller (BET) surface area analyses. The coupling of Lys to HA was attributed to favorable interaction between negatively charged -COO− groups of Lys and divalent ions Ca2+ of HA. Electrochemical investigations pointed out the improvement in sensitivity of the GCE/Lys/HA sensor towards the detection of NBA in solution. The dependence of the peak current and potential on the pH, scan rate, and NBA concentration was also investigated. Under optimal conditions, the GCE/Lys/HA sensor showed a good reproducibility, selectivity, and a NBA low detection limit of 5.07 × 10−8 mol L−1. The developed HA/Lys-modified electrode was successfully applied for the detection of NBA in various water samples.

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“…The building material selection pretends to solve some problems of the electrochemical sensors like electrode fouling and overlapping of the redox potential of the molecules presented as analyte [ 31 ]. In that context, intrinsically conducting polymers (CPs) are one of the most relevant and used materials for modification of sensors by their unique physical and chemical properties [ 32 , 33 ] such as adjustable architecture, adaptability, versatility, room stability, and sensitivity to surfer changes in their electrochemical activity with slight changes in its surface [ 34 , 35 , 36 ]. The electrochemical sensors have evolved through the employment of novel modifier materials such as conducting polymers and carbon nanomaterials [ 37 , 38 ], because the immobilization transfers the physicochemical properties of the modifier to the electrode surface, showing high surface area, excellent thermal conductivity [ 39 ], high conductivity [ 11 ], and strong mechanical strength [ 40 , 41 , 42 ].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Sensors Based on Conducting Polymers for the Aqueous Detection of Biologically Relevant Molecules

et al. 2021

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Electrochemical sensors appear as low-cost, rapid, easy to use, and in situ devices for determination of diverse analytes in a liquid solution. In that context, conducting polymers are much-explored sensor building materials because of their semiconductivity, structural versatility, multiple synthetic pathways, and stability in environmental conditions. In this state-of-the-art review, synthetic processes, morphological characterization, and nanostructure formation are analyzed for relevant literature about electrochemical sensors based on conducting polymers for the determination of molecules that (i) have a fundamental role in the human body function regulation, and (ii) are considered as water emergent pollutants. Special focus is put on the different types of micro- and nanostructures generated for the polymer itself or the combination with different materials in a composite, and how the rough morphology of the conducting polymers based electrochemical sensors affect their limit of detection. Polypyrroles, polyanilines, and polythiophenes appear as the most recurrent conducting polymers for the construction of electrochemical sensors. These conducting polymers are usually built starting from bifunctional precursor monomers resulting in linear and branched polymer structures; however, opportunities for sensitivity enhancement in electrochemical sensors have been recently reported by using conjugated microporous polymers synthesized from multifunctional monomers.

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A novel electrochemical biosensor for the determination of dopamine and ascorbic acid based on graphene oxide /poly(aniline-co-thionine) nanocomposite

Cited by 63 publications

References 32 publications

Structure, Properties, and Electrochemical Sensing Applications of Graphene‐Based Materials

Structure, Properties, and Electrochemical Sensing Applications of Graphene‐Based Materials

Hydroxyapatite/L-Lysine Composite Coating as Glassy Carbon Electrode Modifier for the Analysis and Detection of Nile Blue A

Electrochemical Sensors Based on Conducting Polymers for the Aqueous Detection of Biologically Relevant Molecules

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