A photoelectrochemical glucose sensor based on gold nanoparticles as a mimic enzyme of glucose oxidase

Cao, Lei; Wang, Panpan; Chen, Li; Wu, Ying; Di, Junwei

doi:10.1039/c9ra02088h

Cited by 50 publications

(18 citation statements)

References 43 publications

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“…The generated in situ H2O2 serves for oxidation of a chromogenic substrate on the same catalyst in a dark to complete the nonenzymatic glucose detection. Cao and coauthors [235] recently reported the development of a photoelectrochemical glucose sensor using complicated ternary layered NPs of ITO/PbS/SiO2/AuNPs (ITO -indium tin oxide). Thioglycolic acid-capped PbS quantum dots that are highly sensitive to oxygen were employed as a photoelectrochemical active probe.…”

Section: Nanooxidasesmentioning

confidence: 99%

“…However, the poor stability of natural laccases in complex environments, the difficulty of their recycling, and the high cost of the purified enzyme preparations severely hamper practical applications of this enzyme [12,[245][246][247][248]. Cao and coauthors [235] recently reported the development of a photoelectrochemical glucose sensor using complicated ternary layered NPs of ITO/PbS/SiO 2 /AuNPs (ITO-indium tin oxide). Thioglycolic acid-capped PbS quantum dots that are highly sensitive to oxygen were employed as a photoelectrochemical active probe.…”

Section: Laccase-mimicking Nanozymesmentioning

confidence: 99%

“…Cao and coauthors [ 235 ] recently reported the development of a photoelectrochemical glucose sensor using complicated ternary layered NPs of ITO/PbS/SiO 2 /AuNPs (ITO-indium tin oxide). Thioglycolic acid-capped PbS quantum dots that are highly sensitive to oxygen were employed as a photoelectrochemical active probe.…”

Section: Nanooxidasesmentioning

confidence: 99%

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Synthesis, Catalytic Properties and Application in Biosensorics of Nanozymes and Electronanocatalysts: A Review

Stasyuk

Smutok

Demkiv

et al. 2020

Sensors

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The current review is devoted to nanozymes, i.e., nanostructured artificial enzymes which mimic the catalytic properties of natural enzymes. Use of the term “nanozyme” in the literature as indicating an enzyme is not always justified. For example, it is used inappropriately for nanomaterials bound with electrodes that possess catalytic activity only when applying an electric potential. If the enzyme-like activity of such a material is not proven in solution (without applying the potential), such a catalyst should be named an “electronanocatalyst”, not a nanozyme. This paper presents a review of the classification of the nanozymes, their advantages vs. natural enzymes, and potential practical applications. Special attention is paid to nanozyme synthesis methods (hydrothermal and solvothermal, chemical reduction, sol-gel method, co-precipitation, polymerization/polycondensation, electrochemical deposition). The catalytic performance of nanozymes is characterized, a critical point of view on catalytic parameters of nanozymes described in scientific papers is presented and typical mistakes are analyzed. The central part of the review relates to characterization of nanozymes which mimic natural enzymes with analytical importance (“nanoperoxidase”, “nanooxidases”, “nanolaccase”) and their use in the construction of electro-chemical (bio)sensors (“nanosensors”).

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Section: Nanooxidasesmentioning

confidence: 99%

Section: Laccase-mimicking Nanozymesmentioning

confidence: 99%

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Synthesis, Catalytic Properties and Application in Biosensorics of Nanozymes and Electronanocatalysts: A Review

Stasyuk

Smutok

Demkiv

et al. 2020

Sensors

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“…It is worth mentioning that repeated finger-prick sampling also presents some risk, due to possible exposure to blood-borne pathogens and infections (Thompson and Perz, 2009). For these reasons, small implantable sensors have recently entered the clinical use for chronic patients, and different non-invasive approaches, such as near-infrared transcutaneous spectroscopy (Yadav et al, 2015), breath acetone measurements (Saasa et al, 2018), and other optical and electrical/electrochemical sensing techniques, are currently under investigation in the field (Bharathi and Nogami, 2001;Luo et al, 2004;Wu et al, 2007;Jv et al, 2010;Jiang et al, 2010;Xiong et al, 2015;Xu et al, 2017;Cao et al, 2019;Shokrekhodaei and Quinones, 2020).…”

Section: Introductionmentioning

confidence: 99%

Colorimetric Nanoplasmonics to Spot Hyperglycemia From Saliva

Donati

Pomili

Boselli

et al. 2020

Front. Bioeng. Biotechnol.

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Early diagnostics and point-of-care (POC) devices can save people’s lives or drastically improve their quality. In particular, millions of diabetic patients worldwide benefit from POC devices for frequent self-monitoring of blood glucose. Yet, this still involves invasive sampling processes, which are quite discomforting for frequent measurements, or implantable devices dedicated to selected chronic patients, thus precluding large-scale monitoring of the globally increasing diabetic disorders. Here, we report a non-invasive colorimetric sensing platform to identify hyperglycemia from saliva. We designed plasmonic multibranched gold nanostructures, able to rapidly change their shape and color (naked-eye detection) in the presence of hyperglycemic conditions. This “reshaping approach” provides a fast visual response and high sensitivity, overcoming common detection issues related to signal (color intensity) losses and bio-matrix interferences. Notably, optimal performances of the assay were achieved in real biological samples, where the biomolecular environment was found to play a key role. Finally, we developed a dipstick prototype as a rapid home-testing kit.

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“…Gold nanoparticles (AuNPs) attract much attention owing to their unique optical, electronic, and catalytic properties. They have allowed development of different prototypes of devices for sensing [1,2], detecting [3], and imaging [4,5]. Further progress in designing AuNP-based devices depends on the ability to fabricate complex assemblies with tailored optoelectronic properties.…”

Section: Introductionmentioning

confidence: 99%

Gold Nanoparticle Self-Aggregation on Surface with 1,6-Hexanedithiol Functionalization

et al. 2020

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Here we study the morphology and the optical properties of assemblies made of small (17 nm) gold nanoparticles (AuNPs) directly on silicon wafers coated with (3-aminopropyl)trimethoxysilane (APTES). We employed aliphatic 1,6-hexanedithiol (HDT) molecules to cross-link AuNPs during a two-stage precipitation procedure. The first immersion of the wafer in AuNP colloidal solution led mainly to the attachment of single particles with few inclusions of dimers and small aggregates. After the functionalization of precipitated NPs with HDT and after the second immersion in the colloidal solution of AuNP, we detected a sharp rise in the number of aggregates compared to single AuNPs and their dimers. The lateral size of the aggregates was about 100 nm, while some of them were larger than 1μm. We propose that the uncompensated dipole moment of the small aggregates appeared after the first precipitation and acts further as the driving force accelerating their further growth on the surface during the second precipitation. By having such inhomogeneous surface coating, the X-ray reciprocal space maps and modulation polarimetry showed well-distinguished signals from the single AuNPs and their dimers. From these observations, we concluded that the contribution from aggregated AuNPs does not hamper the detection and investigation of plasmonic effects for AuNP dimers. Meantime, using unpolarized and polarized light spectroscopy, the difference in the optical signals between the dimers, being formed because of self-aggregation and the one being cross-linked by means of HDT, was not detected.

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A photoelectrochemical glucose sensor based on gold nanoparticles as a mimic enzyme of glucose oxidase

Abstract: This work reports the first construction of the ternary layers of ITO/PbS/SiO2/AuNPs nanostructure for development of photoelectrochemical (PEC) glucose sensor.

Cited by 50 publications

References 43 publications

Synthesis, Catalytic Properties and Application in Biosensorics of Nanozymes and Electronanocatalysts: A Review

Synthesis, Catalytic Properties and Application in Biosensorics of Nanozymes and Electronanocatalysts: A Review

Colorimetric Nanoplasmonics to Spot Hyperglycemia From Saliva

Gold Nanoparticle Self-Aggregation on Surface with 1,6-Hexanedithiol Functionalization

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