Simultaneous Determination of Adenine and Guanine Using Cadmium Selenide Quantum Dots-Graphene Oxide Nanocomposite Modified Electrode

Kalaivani, A.; Narayanan, S. Sriman

doi:10.1166/jnn.2015.9717

Cited by 14 publications

(5 citation statements)

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“…Figure shows the quantitative calibration plot (in presence of different concentration values of G, performed by DPV and the corresponding quantitative parameters are reported on Table . FB‐SPE shows the widest range of linearity for the analytical responses to the concentration of G; a good sensitivity (lower than that exhibited by the as reported Graphitized Mesoporous Carbon (GMC) modified GCE, probably for the highest surface nominal area exhibited by the GMC electrodic materials) and the lowest detection limit, if compared with other electrochemical devices reported in literature , and summarized in Table . Also the FB‐SPE show the best intra‐ and inter‐electrodes reproducibility, and the fastest response time (useful to carry out a real time analysis of a large number of samples during the same day, applying disposable, miniaturized and partially automated electrochemical sensors, modified with functionalized fullerenes).…”

Section: Resultsmentioning

confidence: 99%

“…For this purpose is more important to consider the current density (A/cm 2 ) rather than the only I/A parameter. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 [37][38][39][40][41][42][43], and summarized in Table 3. Also the FB-SPE show the best intra-and inter-electrodes reproducibility, and the fastest response time (useful to carry out a real time analysis of a large number of samples during the same day, applying disposable, miniaturized and partially automated electrochemical sensors, modified with functionalized fullerenes).…”

Section: Linear Regression Equationmentioning

confidence: 99%

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Fullerene Black Modified Screen Printed Electrodes for the Quantification of Acetaminophen and Guanine

Valentini

Ciambella

Cataldo³

et al. 2017

Electroanalysis

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Fullerene Black (FB) and Extracted Fullerene Black (EFB) were used in modified screen‐printed electrodes producing electrochemical transducers (FB‐SPEs and EFB‐SPEs). A complete electrochemical study was performed and the best results are obtained working with FB‐SPEs, especially in terms of: 1. improved electron‐transfer kinetic mechanisms and 2. sensitivity and selectivity toward Acetaminophen (Ac) and Guanine (G). These latter represent two important electro‐active targets to quantify in medicine field application, because: Ac is a preferred alternative (as analgesic‐antipyretic agent) to aspirin, particularly for patients who cannot tolerate aspirin; the oxidation signal of G is useful for the fabrication of emerging analytical tools, such as DNA chipsand user‐friendly diagnostic devices. Ac and G are quantify by using FB‐SPEs electrochemical devices, with an extended linearity (1–300 μM for Ac; 0.1–300 μM for G), an excellent sensitivity (2.82 μA μM−1 cm−2 in the case of Ac; and 0.183 μA μM−1 cm−2 in the case of G), a low detection limit (0.01 μM for Ac; 0.005 μM for G), a very good reproducibility (both: intra‐; inter‐electrodes reproducibility RSD % ranging from 0.3–0.5 for Ac; and 0.50–0.85 for G) and a very fast response time (6 s for Ac; 5 s in the case of G). In addition, high selectivity is obtained at FB‐SPEs, meaning that the FB‐SPEs electrochemical transducers are suitable to simultaneously quantify Ac and G in real samples, having several different (highly concentrated) interference.

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Section: Resultsmentioning

confidence: 99%

Section: Linear Regression Equationmentioning

confidence: 99%

Fullerene Black Modified Screen Printed Electrodes for the Quantification of Acetaminophen and Guanine

Valentini

Ciambella

Cataldo³

et al. 2017

Electroanalysis

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“…The combination of graphene and metal selenides can fabricated the composites with enhanced the electron transfer property, improved surface area and increased density of the electrocatalytically active sites, compared with the pure graphene or selenides [144]. For example, CdSe, SnSe 2 , MoSe 2 , CuSe, Ag 2 Se functionalized graphene biosensor have achieved the electrochemical detection of Adenine, Guanine, carbendazim, dopamine, eugenol and serotonin with high sensitivity and selectivity [144a, b, 145]. Furthermore, researchers found that the selenides with bimetallic active sites have better selectivity and catalytic activity than single metal catalysts [146].…”

Section: Fabrication Of Graphene‐based Biosensorsmentioning

confidence: 99%

Recent advances on the development of graphene‐based field‐effect transistors, electrochemical biosensors and electrochemiluminescence biosensors

Zhang

Chen

et al. 2023

Electroanalysis

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Graphene, a honeycomb lattice of carbon material with single‐atom‐layer structure, demonstrates extraordinary mechanical, thermal, chemical and electronic properties. Thus, it has sparked tremendous interests in various fields, such as energy storage and conversion devices, field‐effect transistors (FET), chemical sensors and biosensors. In this review, we will first focus on the synthesis method of graphene and the fabrication strategy of graphene‐based materials. Subsequently, the construction of graphene‐based biosensors are introduced, in which three kinds of biosensors are discussed in details, including the FET, electrochemical biosensors and electrochemiluminescence (ECL) biosensors. The performances of the state‐of‐the‐art biosensors on the detection of biomolecules are also displayed. Finally, we also highlight some critical challenges remain to be solved and the development in this field for further research.

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“…The modified electrode showed excellent electrocatalytic activity for the oxidative determination of adenine and guanine with a good peak separation of 0.31 V. The detection limits of adenine and guanine were 0.028 and 0.055 µM, respectively. The method was employed for herring sperm DNA as an example of a real sample [ 132 ].…”

Section: Biomedical Applicationsmentioning

confidence: 99%

Biomedical Probes Based on Inorganic Nanoparticles for Electrochemical and Optical Spectroscopy Applications

Yakoh

Pinyorospathum

Siangproh

et al. 2015

Sensors

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Inorganic nanoparticles usually provide novel and unique physical properties as their size approaches nanometer scale dimensions. The unique physical and optical properties of nanoparticles may lead to applications in a variety of areas, including biomedical detection. Therefore, current research is now increasingly focused on the use of the high surface-to-volume ratios of nanoparticles to fabricate superb chemical- or biosensors for various detection applications. This article highlights various kinds of inorganic nanoparticles, including metal nanoparticles, magnetic nanoparticles, nanocomposites, and semiconductor nanoparticles that can be perceived as useful materials for biomedical probes and points to the outstanding results arising from their use in such probes. The progress in the use of inorganic nanoparticle-based electrochemical, colorimetric and spectrophotometric detection in recent applications, especially bioanalysis, and the main functions of inorganic nanoparticles in detection are reviewed. The article begins with a conceptual discussion of nanoparticles according to types, followed by numerous applications to analytes including biomolecules, disease markers, and pharmaceutical substances. Most of the references cited herein, dating from 2010 to 2015, generally mention one or more of the following characteristics: a low detection limit, good signal amplification and simultaneous detection capabilities.

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Simultaneous Determination of Adenine and Guanine Using Cadmium Selenide Quantum Dots-Graphene Oxide Nanocomposite Modified Electrode

Cited by 14 publications

References 0 publications

Fullerene Black Modified Screen Printed Electrodes for the Quantification of Acetaminophen and Guanine

Fullerene Black Modified Screen Printed Electrodes for the Quantification of Acetaminophen and Guanine

Recent advances on the development of graphene‐based field‐effect transistors, electrochemical biosensors and electrochemiluminescence biosensors

Biomedical Probes Based on Inorganic Nanoparticles for Electrochemical and Optical Spectroscopy Applications

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