Reduced graphene oxide and carbon nanotubes composite functionalized by azobenzene, characterization and its potential as a curcumin electrochemical sensor

Mousaabadi, Kimia Zarean; Ensafi, Ali A.; Hadadzadeh, Hassan; Rezaei, Behzad

doi:10.1016/j.jelechem.2020.114418

Cited by 23 publications

(16 citation statements)

References 34 publications

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“…An electrochemical chiral sensor via an integrated polysaccharides/3D nitrogen-doped graphene-CNT frame exhibited excellent reproducibility, stability, and selectivity [ 25 ]. Mousaabadi et al, proposed reduced graphene oxide and carbon nanotube composite functionalized by azobenzene that could detect curcumin in the range of 0.008 to 10.0 μM with the detection limit of 0.003 μM [ 26 ]. Three-dimensional (3D) graphene-based wearable piezoresistive sensors were considered promising flexible sensors due to their facile preparation, simple read-out mechanism, and low power consumption [ 27 ].…”

Section: Introductionmentioning

confidence: 99%

Pillared Graphene Structures Supported by Vertically Aligned Carbon Nanotubes as the Potential Recognition Element for DNA Biosensors

Shunaev

Glukhova

2020

Materials

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The development of electrochemical biosensors is an important challenge in modern biomedicine since they allow detecting femto- and pico-molar concentrations of molecules. During this study, pillared graphene structures supported by vertically aligned carbon nanotubes (VACNT-graphene) are examined as the potential recognition element of DNA biosensors. Using mathematical modeling methods, the atomic supercells of different (VACNT-graphene) configurations and the energy profiles of its growth are found. Regarding the VACNT(12,6)-graphene doped with DNA nitrogenous bases, calculated band structure and conductivity parameters are used. The obtained results show the presence of adenine, cytosine, thymine, and guanine on the surface of VACNT(12,6)-graphene significantly changes its conductivity so the considered object could be the prospective element for DNA biosensing.

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Section: Introductionmentioning

confidence: 99%

Pillared Graphene Structures Supported by Vertically Aligned Carbon Nanotubes as the Potential Recognition Element for DNA Biosensors

Shunaev

Glukhova

2020

Materials

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“…Afterward, the precipitate was collected using a centrifuge, and it was repeatedly washed with doubly distilled water to reach the approximate pH of 7.0. Finally, it was dried at room temperature for 24 h [21] to give f‐MWCNTs.…”

Section: Methodsmentioning

confidence: 99%

Polydopamine‐modified MWCNTs‐glassy Carbon Electrode, a Selective Electrochemical Morphine Sensor

2021

Self Cite

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An electrochemical sensor based on a glassy carbon electrode was prepared using f‐MWCNTs and polydopamine. Several techniques were used to investigate the surface features. Voltammetric techniques were used to evaluate the electrocatalyst efficiency, and it was used for morphine determination using differential pulse voltammetry. Different parameters affecting the method‘s sensitivity and selectivity were optimized. The linear dynamic range was 0.075–75.0 μM with a detection limit of 0.06 μM morphine. Also, the method‘s selectivity was tested, which was proved to be satisfactory. Finally, the sensor was successfully used for morphine determination in human plasma and urine samples with acceptable results.

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“…The DPV obtained in these conditions (Figure 3D (▬)) showed the occurrence of peaks 2a and 3a corresponding to the oxidation of the curcumin oxidation products [19]. Curcumin adsorption onto other carbon-based materials has also been described [21][22][23][24]. Moreover, the physisorption and chemisorptions of curcumin on metal surfaces, which occur through the curcumin's oxygen atoms and rings π electrons, represent key elements for the efficient use of curcumin as a corrosion inhibitor [25,26].…”

Section: Electrochemistry Of Curcuminmentioning

confidence: 99%

Electrochemical Sensing of Curcumin: A Review

Chiorcea-Paquim

2023

Antioxidants

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Curcumin is a natural polyphenol derived from turmeric (Curcuma longa) root that has been used for centuries as a spice, coloring agent, and medicine. Curcumin presents anti-inflammatory, antioxidant, anticarcinogenic, antimicrobial, antiviral, antimalarial, hepatoprotective, thrombosuppressive, cardiovascular, hypoglycemic, antiarthritic, and anti-neurodegenerative properties. It scavenges different forms of free radicals and acts on transcription factors, growth factors and their receptors, cytokines, enzymes, and genes, regulating cell proliferation and apoptosis. Curcumin is electroactive, and a relationship between its electron transfer properties and radical-scavenging activity has been highlighted. The objective of this review is to provide a comprehensive overview of the curcumin electron transfer reactions, with emphasis on the controversial aspects related to its oxidation mechanism. The final sections will focus on the electroanalysis of curcumin in natural products, highlighting the most important sensing strategies, based on functional electrodes and nanostructured materials, essential for the development of more efficient in vitro methods of detection and quantification of curcumin in food samples, supplements, and nutripharmaceuticals.

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Reduced graphene oxide and carbon nanotubes composite functionalized by azobenzene, characterization and its potential as a curcumin electrochemical sensor

Cited by 23 publications

References 34 publications

Pillared Graphene Structures Supported by Vertically Aligned Carbon Nanotubes as the Potential Recognition Element for DNA Biosensors

Pillared Graphene Structures Supported by Vertically Aligned Carbon Nanotubes as the Potential Recognition Element for DNA Biosensors

Polydopamine‐modified MWCNTs‐glassy Carbon Electrode, a Selective Electrochemical Morphine Sensor

Electrochemical Sensing of Curcumin: A Review

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