An electrochemical immunosensor for carbohydrate antigen CA125 based on electroactive COFs as a signal probe

Talanta, Journal Year: 2025, Volume and Issue: 286, P. 127546 - 127546

Published: Jan. 7, 2025

Language: Английский

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Chitosan-Based Hydrogel Functionalized with Fe(II) Phthalocyanine for Butylated Hydroxyanisole Determination

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(37), P. 17263 - 17273

Published: Sept. 2, 2024

The synthesis of functional electrode sensing materials is the key to construction electrochemical sensors. A new hydrogel material was developed by incorporating Fe(II) phthalocyanine (FePc) into chitosan-based hydrogels. plays a crucial role in dispersing FePc nanoparticles uniformly and generating stable environment for redox reaction butylated hydroxyanisole (BHA) on surface. Under optimized conditions, prepared sensor exhibited detection range 0.1-30 30-1000 μmol/L, with limit 0.035 μmol/L (S/N = 3). Moreover, this demonstrated exceptional resistance interference maintained its stability. These findings suggest that promising reliable BHA real samples, highlighting potential combining conductive hydrogels functionalized metal phthalocyanines accurate rapid determination.

Language: Английский

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Metal-organic framework-sealed heterogeneous nanoenzyme: A dual-mode core–shell sensor for sensitive determination of the chlorpyrifos residue in environment and bioaccumulation in food

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 157693 - 157693

Published: Nov. 1, 2024

Language: Английский

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Portable Electroanalytical Platform Based on Eco-Friendly Biomass-Based Hydrogels with Bimetallic MOF Composites for Trace Acetaminophen Determination

ACS Biomaterials Science & Engineering, Journal Year: 2024, Volume and Issue: 11(1), P. 649 - 660

Published: Dec. 18, 2024

Accurate acetaminophen (APAP) determination using smartphone-based portable sensing hinges on developing interfaces with effective catalytic performance and high electron transfer efficiency. Herein, we report that various Ni-based bimetallic-organic framework materials (MOFs) were synthesized through the hydrothermal method. These MOFs incorporated multiwalled carbon nanotubes (MWCNTs) during synthesis of chitosan-cationic guar gum hydrogels (HG). The resulting composite conductive hydrogel features a distinctive three-dimensional network structure large specific surface area, enhancing APAP enrichment electrocatalytic activity. Among them, CuNi-MOF-based (CHG/CuNi-MOF) has most desirable capability as signal amplifier. Under optimal conditions, sensor constructed screen-printed electrode (SPE) CHG/CuNi-MOF (CHG/CuNi-MOF/SPE) wide detection range (0.07–1500 μM), low limit (0.023 relatively sensitivity (0.0450 μA·μM–1·cm–2) for determination. In addition, CHG/CuNi-MOF/SPE good stability, repeatability anti-interference properties, which make it possible to achieve selective targets in complex analysis ultimately obtain satisfactory recoveries (97.6–104.2%). This work successfully proves feasibility application MOFs-based electrochemical phenolics actual samples.

Language: Английский

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Three-dimensional hydrangea-like layered double hydroxide anchoring hollow metal organic-framework for efficient adsorption of 2, 4-dichlorophenoxyacetic acid

Materials Today Chemistry, Journal Year: 2023, Volume and Issue: 35, P. 101883 - 101883

Published: Dec. 26, 2023

Language: Английский

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Ultrathin Cu–TCPP Nanosheet-Based Electrochemical Microsensor for Detecting the Immunosuppressive Drug Mycophenolic Acid

ACS Applied Nano Materials, Journal Year: 2023, Volume and Issue: 6(24), P. 22979 - 22988

Published: Dec. 5, 2023

Mycophenolic acid (MPA), which is a potent immunosuppressant, has been widely used to prevent organ rejection after transplantation. In clinical practice, it essential monitor the free MPA concentration. Herein, convenient and fast electrochemical microsensing technology developed for directly detecting To implement this method, ultrathin copper-based metal–organic framework (Cu–MOF) nanosheets with thickness of about 6.6 nm are detect MPA. An analysis behavior reveals direct catalytic oxidation mechanism molecules on Cu(II) tetrakis(4-carboxyphenyl)porphyrin (Cu–TCPP)-modified electrode. Furthermore, testing results show that Cu–TCPP nanosheet-based microsensor exhibits high sensitivity specificity in nano- micromolar range, detection limit 10 nM. X-ray absorption spectroscopy (XAS) characterization unsaturated metal ions active sites responsible boosting molecules. High-performance liquid chromatography–tandem mass spectrometry further shows product phenolic hydroxyl group molecule site where reaction occurs. The considerable sensing performance proves possible develop method high-frequency monitoring immunosuppressive drugs.

Language: Английский

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In situ formation of boronic acid-based covalent organic frameworks for specific and ultra-sensitive electrochemical assay of glycosylated amyloid-beta proteins

Talanta, Journal Year: 2024, Volume and Issue: 285, P. 127435 - 127435

Published: Dec. 19, 2024

Language: Английский

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Controllable assembly of hollow interpenetrated zeolite imidazole framework nanocomposite for dopamine charge collection

Microchimica Acta, Journal Year: 2023, Volume and Issue: 191(1)

Published: Dec. 23, 2023

Language: Английский

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One stone two birds: NH2-UiO-66@MB-based bimodal aptasensor for sensitive and rapid detection of zearalenone in cereal products

Talanta, Journal Year: 2024, Volume and Issue: 285, P. 127331 - 127331

Published: Dec. 4, 2024

Language: Английский

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Classifications and functionalization of smart and intelligent nanomaterials for biosensor technology

Elsevier eBooks, Journal Year: 2024, Volume and Issue: unknown, P. 43 - 64

Published: Nov. 29, 2024

Language: Английский

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