4.8 Article

Dual-functional Nanomaterials Polyo-phenylenediamine and Ru-Au Complement Each Other to Construct an Electrochemical and Electrochemiluminescent Dual-Mode Aptamer Sensor for Sensitive Detection of Alternariol

Related references

Note: Only part of the references are listed.
Article Food Science & Technology

Portable chemiluminescence optical fiber aptamer-based biosensors for analysis of multiple mycotoxins

Yaxue Jia et al.

Summary: In this study, a novel chemiluminescence optical fiber aptamer-based biosensor is developed for ultrasensitive on-site detection of multiple mycotoxins in food samples. The system is compact and portable, allowing simultaneous detection of four mycotoxins without tedious operation, with a wide detection range and low detection limits.

FOOD CONTROL (2023)

Article Chemistry, Applied

Simultaneous determination of zearalenone and alternariol mycotoxins in oil samples using mixed molecularly imprinted polymer beads

Tamara Moya-Cavas et al.

Summary: This study optimized a method using Molecularly Imprinted Polymers (MIPs) for the simultaneous determination of zearalenone and alternariol mycotoxins. The method was optimized using a chemometric approach, and the results were confirmed by HPLC-MS/MS. The optimized method has been successfully applied and validated in the analysis of mycotoxins in maize, sunflower, and olive oils samples.

FOOD CHEMISTRY (2023)

Article Chemistry, Applied

In-depth interpretation of aptamer-based sensing on electrode: Dual-mode electrochemical-photoelectrochemical sensor for the ratiometric detection of patulin

Shuda Liu et al.

Summary: Electrochemical aptasensors using high-affinity aptamers have been widely used for quantifying food contaminants. However, the analytical performance can vary for different aptamers targeting the same contaminant. In this study, four aptamers with different sequences were compared for detecting patulin. The aptasensor with A22 exhibited the best performance, despite A42 having the highest affinity. The A22-based EC-PEC dual-mode ratiometric aptasensor showed a linear range of 50 fg mL-1 - 500 ng mL-1 and a detection limit of 30 fg mL-1 for patulin.

FOOD CHEMISTRY (2023)

Article Chemistry, Analytical

A difunctional electrochemiluminescence sensor based on Ru-MOFs and strand-displacement-amplification reaction for ultrasensitive detection of Hg2+and Ag+

Jiuying Cui et al.

Summary: A label-free difunctional electrochemiluminescence (ECL) sensor was developed for ultrasensitive detection of mercury ions (Hg2+) and silver ions (Ag+) using Ru(bpy)32+-functionalized metal-organic frameworks (Ru-MOFs) and the strand-displacement-amplification (SDA) reaction. The sensor achieved enhanced detection sensitivity by combining SDA with Ru-MOFs, which also provided a stable carrier for DNA during sensor construction. The sensor demonstrated low detection limits for Hg2+ and Ag+ ions and was successfully applied for their determination in seawater, making it an ideal platform for simultaneous detection of trace heavy metal ions.

SENSORS AND ACTUATORS B-CHEMICAL (2023)

Review Chemistry, Analytical

Structural DNA tetrahedra and its electrochemical-related surface sensing

Pu Zhang et al.

Summary: Structural DNA tetrahedra, one of the most popular self-assembled DNA nanostructures, have significant potential in surface bioanalysis engineering. The encoded structural and functional information in DNA tetrahedra allows for various configurations and modifications, including functionalizing the vertices, regulating the edges, and controlling the size. This review focuses on the specific physical features of DNA tetrahedra on the electrode interface and summarizes recent advances in their application in electrochemistry, electrochemiluminescence, photochemiluminescence, and surface-enhanced Raman scattering. The field of DNA tetrahedra-based sensing surfaces is at the forefront of bioanalysis, nanomedicine, and environmental and food analysis. (c) 2023 Elsevier B.V. All rights reserved.

TRAC-TRENDS IN ANALYTICAL CHEMISTRY (2023)

Article Microbiology

Cytoplasmic contractile injection systems mediate cell death in Streptomyces

Bastien Casu et al.

Summary: Characterization of a contractile injection system (CIS) in Streptomyces coelicolor reveals its role in mediating cell death and impacting cellular development in response to stress. This study provides insights into the functional roles of CIS in Gram-positive organisms and offers a framework for studying intracellular processes in multicellular bacteria.

NATURE MICROBIOLOGY (2023)

Article Chemistry, Analytical

A novel electrochemical immunosensor that amplifies Poly (o-phenylenediamine) signal by pH-driven cascade reaction used for alpha-foetoprotein detection

Mingzhe Jiang et al.

Summary: This paper reports a new electrochemical immunosensor that uses poly(o-phenylene diamine) attached gold nanoparticles as the immune platform, polydopamine-loaded cobalt ions as the immune probe, and K2S2O8 as the pH-driven signal amplifying substance. This immunosensor has the advantages of reducing signal loss and leakage, decreasing impedance, and stable detection of AFP.

ANALYTICA CHIMICA ACTA (2023)

Article Chemistry, Analytical

Target controlled alternative hybridization chain reaction for fluorescent detection of dual mycotoxins

Qin Ma et al.

Summary: A target controlled alternative hybridization chain reaction (HCR) was developed for fluorescent detection of multiple mycotoxin, showing great sensitivity and excellent selectivity in practical food sample analysis for simultaneous detection of OTA and AFB1.

ANALYTICA CHIMICA ACTA (2023)

Article Chemistry, Applied

An ultrasensitive ratiometric aptasensor based on the dual-potential electrochemiluminescence of Ru(bpy)3+in a novel ternary system for detection of Patulin in fruit products

Liangrui Lv et al.

Summary: An ultrasensitive PAT ratiometric aptasensor based on the dual-potential electrochemiluminescence of Ru(bpy)32+ was proposed for sensitive monitoring of trace-level PAT. The aptasensor integrated Ru@Tri nanocube as the cathodic coreaction accelerator and anth-CQDs@SiO2 as the anodic coreactant, allowing for the establishment of a novel ternary ECL system. The proposed method showed a low detection limit of 0.05 pg mL-1 and demonstrated practical applicability by comparing the results with HPLC analysis of fruit products.

FOOD CHEMISTRY (2023)

Article Chemistry, Analytical

Construction of electrochemical and electrochemiluminescent dual-mode aptamer sensors based on ferrocene dual-functional signal probes for the sensitive detection of Alternariol

Mingzhe Jiang et al.

Summary: A novel dual-mode aptamer sensor was developed using Fca-DNA2 and Ru-MOF/Cu@Au NPs to detect AOH via a competitive reaction. The advantages of this sensor include rapid synthesis of Ru-MOF on the electrode surface, the amplification of ECL behavior by Cu@Au NPs, and the detection of both ECL and EC signals by the dual-functional material Fca. Both ECL and EC methods showed excellent detection performance for AOH in a wide range with low detection limits, making them suitable for sensitive AOH detection in real samples.

ANALYTICA CHIMICA ACTA (2023)

Article Biophysics

Potentiometric aptasensing of Escherichia coli based on electrogenerated chemiluminescence as a highly sensitive readout

Xueqing Gao et al.

Summary: This study introduces a versatile approach to read out potentiometric aptasensors using electrogenerated chemiluminescence (ECL) to amplify the small potential changes induced by bacterial concentrations. The developed sensing strategy shows a highly sensitive response to E. coli O157: H7 with a low detection limit.

BIOSENSORS & BIOELECTRONICS (2022)

Article Chemistry, Analytical

A solid-state electrochemiluminescence aptasensor for β-lactoglobulin using Ru-AuNP/GNP/Naf nanocomposite-modified printed sensor

Chitra Padmakumari Kurup et al.

Summary: An electrochemiluminescence (ECL) aptasensor with nanocomposite as luminophore was developed for the detection of beta-lactoglobulin (-LG), a milk protein allergen. The aptasensor exhibited high sensitivity and specificity, with a linear range of 0.1-1000 pg/mL and a detection limit of 0.02 pg/mL. The integration of Ru-AuNPs/GNP/Naf nanocomposite in the ECL aptasensor offers a cost-effective and sensitive method for the detection of beta-LG allergen.

MICROCHIMICA ACTA (2022)

Article Chemistry, Analytical

Surface plasmon resonance aptasensor for Brucella detection in milk

Ali D. Dursun et al.

Summary: A Surface Plasmon Resonance (SPR) aptasensor was developed for the sensitive detection of Brucella melitensis in milk samples. By using aptamers with high affinity and specificity, the aptasensor enables quick and efficient purification and detection of Brucella melitensis contamination in milk samples. The integration of a magnetic isolation step and SPR technology allows for instant and reliable detection of Brucella melitensis.

TALANTA (2022)

Article Chemistry, Analytical

Electrochemical immunosensor based on Cu(II)-tetrahydroxy-1,4-benzoquinone amplifier for carcinoembryonic antigen determination

Mingzhe Jiang et al.

Summary: To improve the sensitivity of the immune sensor, we synthesized a new type of electroactive substance called Cu-THQ, which has stronger Redox activity, better stability, and biocompatibility. Experimental results showed that the immunosensor exhibited good linearity and low detection limit for the detection of carcinoembryonic antigen.

MICROCHIMICA ACTA (2022)

Article Nanoscience & Nanotechnology

Revisiting the Structure and Electrochemical Performance of Poly(o-phenylenediamine) as an Organic Cathode Material

Xi Zhang et al.

Summary: Poly(o-phenylenediamine) has been identified as a promising cathode material for lithium batteries, with PoPDA-H synthesized at high temperature showing better performance and potential for practical application in energy storage devices.

ACS APPLIED MATERIALS & INTERFACES (2022)

Article Chemistry, Analytical

Preparation of a pH-responsive controlled-release electrochemical immunosensor based on polydopamine encapsulation for ultrasensitive detection of alpha-fetoprotein

Mingzhe Jiang et al.

Summary: A novel electrochemical immunosensor utilizing polydopamine-coated Fe3O4 nanoparticles, polyaniline, and gold nanoparticles has been developed for ultra-sensitive detection of alpha-fetoprotein, offering high selectivity, repeatability, and stability.

MICROCHIMICA ACTA (2022)

Article Chemistry, Physical

Borate narrowed band gap of nickel-iron layer double hydroxide to mediate rapid reconstruction kinetics for water oxidation

Hanxiao Liao et al.

Summary: This study developed a borate ion regulation strategy to achieve fast and sufficient reconstruction of nickel-iron layer double hydroxide (NiFe LDH). It was found that the NiFe LDH decorated with BO33- showed desirable catalytic activity for oxygen evolution reaction (OER) with lower overpotential and higher current density. This work is important for expanding the understanding of the ion effect on electrocatalysis and developing high-active electrocatalysts.

APPLIED CATALYSIS B-ENVIRONMENTAL (2022)

Article Chemistry, Analytical

Highly Electrochemiluminescent Cs4PbBr6@CsPbBr3 Perovskite Nanoacanthospheres and Their Application for Sensing Bisphenol A

Ruifen Sun et al.

Summary: In this study, highly electrochemiluminescent perovskite quantum dots (PQDs) were synthesized by optimizing the synthesis conditions. The volume of the precursor solution, concentrations of CsBr and PbBr2, amount of capping reagents, and synthesis reaction temperature were found to significantly affect the ECL activity of PQDs. The new PQDs, characterized as hybrids of 3D PQDs and 0D PQDs with unique morphologies, exhibited much higher ECL activity compared to prevailing 3D PQDs. These novel PQDs were successfully applied for the ECL sensing of bisphenol A, showing promising potential in analytical chemistry.

ANALYTICAL CHEMISTRY (2022)

Article Chemistry, Analytical

In Situ Formation of o-Phenylenediamine Cascade Polymers Mediated by Metal-Organic Framework Nanozymes for Fluorescent and Photothermal Dual-Mode Assay of Acetylcholinesterase Activity

Shuo Li et al.

Summary: A dual-mode assay method combining fluorescence and photothermal was developed to detect AChE activity. Utilizing metal-organic frameworks and o-phenylenediamine cascade polymers, the method accurately measures AChE activity in human serum.

ANALYTICAL CHEMISTRY (2022)

Article Chemistry, Multidisciplinary

Phototriggered color modulation of perovskite nanoparticles for high density optical data storage

Jie Chen et al.

Summary: This study discovered that the wavelength of perovskite nanocrystals (PNCs) can be continuously and precisely tuned over a wide color range using a single UV light source. The changes in crystal structures and optical properties of PNCs during UV irradiation were investigated, and the mechanism of UV triggered PNC fluorescence change was studied. The applicability of PNCs/DCM film in N-wavelength-based high-density optical data storage was verified.

CHEMICAL SCIENCE (2022)

Article Chemistry, Analytical

Development of Hollow Electrochemiluminescent Nanocubes Combined with a Multisite-Anchored DNA Nanomachine for Mycotoxin Detection

Xia Zhong et al.

Summary: Pd-Rub-Ag@Au nanocubes exhibiting uniform size and significantly enhanced ECL efficiency and intensity in aqueous media were prepared. Combined with a multisite-anchored DNA nanomachine, an ECL biosensing platform for ochratoxin A detection was constructed, achieving a detection limit of 4.7 fg/mL, offering a promising method for further PAHs application.

ANALYTICAL CHEMISTRY (2021)

Review Environmental Sciences

Alternaria alternata allergens: Markers of exposure, phylogeny and risk of fungi-induced respiratory allergy

Marta F. Gabriel et al.

ENVIRONMENT INTERNATIONAL (2016)