Highly sensitive and selective colorimetric sensor for thiocyanate based on electrochemical oxidation-assisted complexation reaction with Gold nanostars etching

Cui, Xinwen; Wei, Tianxiang; Hao, Mengyuan; Qi, Qi; Wang, Huafeng; Dai, Zhihui

doi:10.1016/j.jhazmat.2020.122217

Cited by 16 publications

(7 citation statements)

References 47 publications

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“…For example, the fluorescence-based approach is time-consuming and costly; 9 colorimetric assays usually suffers the disadvantages of low sensitivity and high detection limit (LOD). 10 Among the aforementioned methods, the electrochemical technique is very competitive and attractive due to its advantages of miniaturization capabilities, simple operation, cost-effectiveness, high sensitivity and selectivity, and the possibility for real-time H 2 O 2 detection. During the last few decades, electrochemical biosensors employing enzymes were found to be more sensitive and selective to target molecules and have been extensively investigated in chemistry, biology, and many other fields.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Currently, various analytical approaches have been developed for the quantitative determination of H 2 O 2 from complicated biological samples, such as fluorescence, colorimetry, , chemiluminescence, and electrochemistry. , However, the majority of these methods suffer from their technical downsides. For example, the fluorescence-based approach is time-consuming and costly; colorimetric assays usually suffers the disadvantages of low sensitivity and high detection limit (LOD) . Among the aforementioned methods, the electrochemical technique is very competitive and attractive due to its advantages of miniaturization capabilities, simple operation, cost-effectiveness, high sensitivity and selectivity, and the possibility for real-time H 2 O 2 detection.…”

Section: Introductionmentioning

confidence: 99%

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Direct Growth of Poly-Glutamic Acid Film on Peroxidase Mimicking PCN-222(Mn) for Constructing a Novel Sensitive Nonenzymatic Electrochemical Hydrogen Peroxide Biosensor

Chen

Wei

Wang

et al. 2020

ACS Sustainable Chem. Eng.

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Metalloporphyrinic frameworks have demonstrated to be an alternative candidate for natural enzymes due to their diverse structures and unique peroxidase-mimicking properties. In this study, a manganese–metalloporphyrin framework (PCN-222(Mn)) was synthesized as a biomimetic metal–organic framework (MOF). This catalyst exhibited highly intrinsic peroxidase-like activity with 3,3′,5,5′-tetramethylbenzidine as the chromogenic substrate. Additionally, a higher peroxidase-like activity was observed in a wider pH range (from 3.0 to 8.0), which is undoubtedly advantageous for PCN-222(Mn) to detect H2O2 under physiological and pathological environments. Based on the excellent peroxidase-mimicking activities of PCN-222(Mn), a novel hydrogen peroxide (H2O2) nonenzymic amperometric biosensor was constructed through electro-polymerizing a conductive and stable poly-glutamic acid (PGA) film on the surface of a PCN-222(Mn)-modified electrode (PGA/PCN-222(Mn)/GCE). Resulting from the synergistic activity of PCN-222(Mn) and PGA film, a sensitive, selective, and reliable method was established for H2O2 detection with a linear range of 5 × 10–7 to 1.01 × 10–3 mol/L and detection limit of 3.1 × 10–8 mol/L. In addition, PGA/PCN-222(Mn) has a long-term stability and can be used over 90 cycles without any decrease in analytical performance. These outstanding performances of the developed approach in sensitive and selective determination of H2O2 from human serum provides effective proof for its potential application in monitoring low-abundance H2O2 from complicated biological samples. This research not only expands the electrochemical applications of metalloporphyrin frameworks but also demonstrates a promising strategy for increasing the conductivity and stability of MOF-based electrode materials.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Direct Growth of Poly-Glutamic Acid Film on Peroxidase Mimicking PCN-222(Mn) for Constructing a Novel Sensitive Nonenzymatic Electrochemical Hydrogen Peroxide Biosensor

Chen

Wei

Wang

et al. 2020

ACS Sustainable Chem. Eng.

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“…22 Because of its strong LSPR with a broad range from visible to near-infrared and excellent extinction coefficient, AuNSs are commonly used in colorimetric analysis of various chemicals. 18,20,22 Functionalized AuNSs have been successfully employed for the detection of different molecules including thiocyanate, 23 glucose, 24 Pb 2+ ion, 25 bacteria, 26,27 paraquat residues, 28 and cysteine, 29 respectively. Moreover, AuNSs were also applied in the biological field because of its strong and highly tunable extinction in the visible region.…”

Section: Introductionmentioning

confidence: 99%

Functionalization of Gold Nanostars with Melamine for Colorimetric Detection of Uric Acid

et al. 2023

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Gold nanostars (AuNSs) are synthesized by seed mediated growth method. The synthesized AuNSs solution is stable and shows a localized surface plasmon resonance (LSPR) band in the visible range, which is confirmed by UV-visible spectroscopy. Further, the as-synthesized AuNSs were functionalized with melamine and used as a sensor for the colorimetric detection of uric acid (UA). The detection mechanism could be assessed various analytical techniques such as UV-visible spectroscopy, Fourier transforms infrared (FT-IR) spectroscopy, dynamic light scattering (DLS), zeta potential, field emission scanning electron microscopy (FE-SEM) and transmission electron microscopic techniques, respectively. This methods exhibited a good linear regression between the absorption ratio of LSPR band of melamine-AuNSs and the concentration of UA (0 – 120 µM), with the detection limit of 8.50 nM. As a result, UA was quantitatively detected in biofluids by melamine-AuNSs as a colorimetric sensor, revealing melamine-AuNSs-based colorimetric approach could be used as a simple platform for UA assay in biofluids.

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“…Numerous nanomaterials such as thiourea-capped MoS 2 nanosheets [ 12 , 13 ], CuO/WO 3 nanoparticle (NP)-decorated graphene oxide nanosheets [ 14 ], DNA-templated silver nanoclusters [ 13 ], and CuO NPs [ 15 ] have been reported to capture cancer cells or amplify electrochemical signals during electrochemical detection of cancer cells. Gold nanostars (AuNSs) have gained intensive attention in diagnosis, bioimaging, and biomedical applications [ 16 , 17 , 18 ]. AuNSs with controllable sizes tend to exhibit easy surface modification, favorable optical properties, and high biocompatible performance [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Cytosensor Based on a Gold Nanostar-Decorated Graphene Oxide Platform for Gastric Cancer Cell Detection

Zhang

Liu

Huang

et al. 2022

Sensors

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Effectively capturing and sensitively detecting cancer cells are critical to clinical diagnosis and cancer therapy. In this work, we prepared gold nanostar-decorated graphene oxide (GO-AuNSs) nanocomposites using a ultraviolet (UV)-induced strategy, and then modified them with a layer of bio-complex rBSA-FA (coupled reduced bovine serum albumin with folic acid) to generate GO-AuNSs@rBSA-FA nanocomposites. Herein, the application of GO and AuNSs not only strengthened the conductivity of the sensing platform but also guaranteed nanocomposites with biocompatible performance. Moreover, the adopted rBSA-FA layer could effectively enhance the stability and specificity towards gastric cancer cells (MGC-803). According to a systemic construction procedure, a novel electrochemical cytosensor based on GO-AuNSs@rBSA-FA was fabricated for MGC-803 cell detection. With the assistance of cyclic voltammetry (CV) and differential pulse voltammetry (DPV), the cytosensor reached a detection limit of 100 cell/mL in a wide linear range of 3 × 102~7 × 106 cell/mL towards MGC-803 cells. The good electrochemical characteristics for the cancer cell analysis indicate a promising prospect of this electrochemical cytosensor in clinical cancer diagnosis.

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Highly sensitive and selective colorimetric sensor for thiocyanate based on electrochemical oxidation-assisted complexation reaction with Gold nanostars etching

Cited by 16 publications

References 47 publications

Direct Growth of Poly-Glutamic Acid Film on Peroxidase Mimicking PCN-222(Mn) for Constructing a Novel Sensitive Nonenzymatic Electrochemical Hydrogen Peroxide Biosensor

Direct Growth of Poly-Glutamic Acid Film on Peroxidase Mimicking PCN-222(Mn) for Constructing a Novel Sensitive Nonenzymatic Electrochemical Hydrogen Peroxide Biosensor

Functionalization of Gold Nanostars with Melamine for Colorimetric Detection of Uric Acid

Electrochemical Cytosensor Based on a Gold Nanostar-Decorated Graphene Oxide Platform for Gastric Cancer Cell Detection

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