A highly sensitive electrode modified with graphene, gold nanoparticles, and molecularly imprinted over-oxidized polypyrrole for electrochemical determination of dopamine

Tuyen, P.N.K.; Quan, Do Phuc; Nguyen, Hai Binh; Nguyen, Van Lap; Tran, Dai Lam; Le, Trong Huyen; Nguyen, Le Huy; Pham, Hung Viet; Nguyen, Thai Loc; Tran, Quang Huy

doi:10.1016/j.molliq.2014.07.029

Cited by 53 publications

(12 citation statements)

References 21 publications

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“…In the case of DA detection by commonly employed electrochemical methods, limitations are related to the fact that DA oxidized at almost the same potential as AA. Nevertheless, recent publications have highlighted several strategies to overcome this problem using new nanocomposites 5-10 , magnetic particles [11][12][13][14][15][16] , conducting polymer [17][18] , carbon nanotubes 19-25 and molecularly imprinted polymers as active layers [26][27][28][29][30] . However, the development of these electrochemical sensors requires yet large numbers of steps for fabrication.…”

Section: Introductionmentioning

confidence: 99%

Ultrasensitive and Selective Detection of Dopamine Using Cobalt-Phthalocyanine Nanopillar-Based Surface Acoustic Wave Sensor

Fourati

Seydou

Zerrouki

et al. 2014

ACS Appl. Mater. Interfaces

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A highly selective and sensitive surface acoustic wave (SAW) sensor of dopamine (DA) was developed by depositing cobalt phthalocyanine (CoPc) nanopillars on gold-coated sensing platform of SAW sensor. The developed biosensor presents a sensitivity of 1.6°/nM, has a low limit of detection (LOD) on the order of 0.1 nM, and imparts more selectivity toward DA, since the detection limit of the interfering ascorbic acid (AA) is as high as 1 mM. To understand the selectivity mechanisms of this sensor toward DA, density functional theory-based chemical calculations were carried out. Calculations suggest two different types of interactions: dative bond with a very strong character for DA-CoPc complexes, and significant ionic character in the case of AA-CoPc ones. The interaction energies, in liquid phase, were estimated to be equal to -81 kJ mol(-1) and -38 kJ mol(-1) for DA-CoPc and AA-CoPc complexes, respectively, therefore accounting for the selective detection of DA over AA using tandem CoPc nanopillar-based SAW sensor device. This work demonstrates a simple and efficient design of SAW sensors employing thin nanostructured CoPc biomolecular recognition layers for DA detection.

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Section: Introductionmentioning

confidence: 99%

Ultrasensitive and Selective Detection of Dopamine Using Cobalt-Phthalocyanine Nanopillar-Based Surface Acoustic Wave Sensor

Fourati

Seydou

Zerrouki

et al. 2014

ACS Appl. Mater. Interfaces

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“…In some cases this can result in increased selectivity, as has been found for dopamine. Simultaneously, the diminished conductivity of over-oxidised PPy can be alleviated to some extent by decorating the layer with golden nanoparticles, which can also act to increase the sensitivity of the sensor [ 20 ].…”

Section: Sensor Fabrication Methodsmentioning

confidence: 99%

Electropolymerised Polypyrroles as Active Layers for Molecularly Imprinted Sensors: Fabrication and Applications

Glosz

Stolarczyk

2021

Materials

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Conjugated polymers are widely used in the development of sensors, but even though they are sensitive and robust, they typically show limited selectivity, being cross-sensitive to many substances. In turn, molecular imprinting is a method involving modification of the microstructure of the surface to incorporate cavities, whose shape matches that of the “template”—the analyte to be detected, resulting in high selectivity. The primary goal of this review is to report on and briefly explain the most relevant recent developments related to sensors utilising molecularly imprinted polypyrrole layers and their applications, particularly regarding the detection of bioactive substances. The key approaches to depositing such layers and the most relevant types of analytes are highlighted, and the various trends in the development of this type of sensors are explored.

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“…Journal of Nanomaterials 5 [65]. The prepared electrode showed a good recognition capacity for template molecule (DA) in the presence of other structurally similar molecules (AA, UA).…”

Section: Polymer Modified Gomentioning

confidence: 99%

“…Owing to its unique electronic, mechanical, and thermal properties, graphene has been intensively employed as modification materials on the surface of different electrodes. Up to now, many modified electrodes supported by graphene oxide, such as graphene-metal oxide nanocomposite, GOcarbon dot composite, GO-bimetallic nanoclusters, layer-bylayer assembled multilayer films of GO/metal nanoparticles, GO/polymer nanosheets, and GO/hybrid polymer composite [64][65][66][67][68][69][70][71][72][73][74], have been successfully prepared for the electrochemical detection of dopamine and have shown their unique properties. Even so, the development of novel graphene combined with AuNPs nanocomposite for the electrochemical determination of dopamine remains interesting and challenging.…”

Section: Graphene Oxide (Go) Modified Electrode For Dopamine Sensingmentioning

confidence: 99%

“…Recently the design of novel nanocomposites with combination of graphene and conductive polymers plays a challenging role in elaboration of hybrid electrodes with (bio)sensing properties. Due to long-term environmental stability, strong adherence to electrode surface, high electric conductivity, large active sites, good selectivity, and biocompatibility, polymer modified electrodes have been paid increasing attention and become a research focus [65,83,84].…”

Section: Polymer Modified Gomentioning

confidence: 99%

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Graphene Oxide Modified Electrodes for Dopamine Sensing

Khan

2017

Journal of Nanomaterials

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Dopamine (DA) is one of the most important catecholamine neurotransmitters that plays an important role in the central nervous, renal, hormonal, and cardiovascular systems. Since its discovery, tremendous effort has been made and various techniques have been developed for the DA detection. Recently, graphene-based materials have attracted a tremendous amount of attention due to their high sensitivity and rapid response towards effective detection of DA. This review focuses on current advances of graphene-based materials for DA detection based on recent articles published in the last five years.

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A highly sensitive electrode modified with graphene, gold nanoparticles, and molecularly imprinted over-oxidized polypyrrole for electrochemical determination of dopamine

Cited by 53 publications

References 21 publications

Ultrasensitive and Selective Detection of Dopamine Using Cobalt-Phthalocyanine Nanopillar-Based Surface Acoustic Wave Sensor

Ultrasensitive and Selective Detection of Dopamine Using Cobalt-Phthalocyanine Nanopillar-Based Surface Acoustic Wave Sensor

Electropolymerised Polypyrroles as Active Layers for Molecularly Imprinted Sensors: Fabrication and Applications

Graphene Oxide Modified Electrodes for Dopamine Sensing

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