Unprecedented and laborless polymer film of azorubin S for electrocatalytic sensing of nicotine in human serum and saliva

Electroanalysis, Год журнала: 2024, Номер 36(7)

Опубликована: Фев. 29, 2024

Abstract An accurate, disposable and cost‐effective determination, monitoring of nicotine in human bodily fluids such as serum saliva is significant due to the deleterious effects on humankind. In this paper, it was reported an electrocatalytic sensing platform for determination with poly azorubin s film modified pencil graphite electrode qualified by electroanalytical techniques cyclic voltammetry electrochemical impedance spectroscopy, electron beam based technique scanning microscopy, X‐ray including photoelectron spectroscopy energy dispersive spectroscopy. The developed exhibited a 410 % signal increase compared bare (280 current density over aPGE) detection improved charge transfer conductivity characteristics polymer film. oxidation peak at 700 mV employed good sensitivity , remarkable limit 89 nM, wide linear ranges 0.25–3 μM 5–100 μM. Furthermore, sensor showcases superb stability, selectivity accuracy real samples saliva.

Язык: Английский

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A novel perspective for estimating the passivation and energy storage characteristics in micro-mass coatings using CV, EIS, and EQCM techniques: Ultrahigh supercapacitor behaviors of Bismarck Brown R and Bismarck Brown Y polymer films

Journal of Energy Storage, Год журнала: 2025, Номер 115, С. 115985 - 115985

Опубликована: Фев. 27, 2025

Язык: Английский

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Catalytic Competence of Gold Clusters Decorated Yellow 2 G Polymer Composite Film for Voltammetric Sensing of Dopamine and Nicotine in Biological Fluids

Synthetic Metals, Год журнала: 2024, Номер 309, С. 117765 - 117765

Опубликована: Окт. 9, 2024

Язык: Английский

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Batch-fabricated full glassy carbon fibers for real-time tonic and phasic dopamine detection

Frontiers in Bioengineering and Biotechnology, Год журнала: 2025, Номер 13

Опубликована: Фев. 28, 2025

Dopamine (DA) is a critical neurotransmitter that key in regulating motor functions, motivation, and reward-related behavior. Measuring both tonic (baseline, steady-state) phasic (rapid, burst-like) DA release essential for elucidating the mechanisms underlying neurological disorders, such as schizophrenia Parkinson’s disease, which are associated with dysregulated signaling. Carbon fiber microelectrodes (CFEs) considered gold standard measuring rapid changes due to their small size (5–10 µm), biocompatibility, flexibility, excellent electrochemical properties. However, achieving consistent results large-scale production of CFE arrays through manual fabrication poses significant challenges. We previously developed flexible glassy carbon (GC) microelectrode (MEAs) GC fiber-like MEAs (GCF MEAs) detection electrophysiology recording. also demonstrated feasibility fabricating MEA electrodes interconnects made from single homogeneous material, eliminating need metal interconnections addressing related concerns about electrical mechanical stability under prolonged cycling. Building on our prior experience, we now present double-etching microfabrication technique batch 10 μm × µm full fibers (fGCFs) fGCF arrays, composed entirely material. This process uses 2 µm-thick low-stress silicon nitride bottom insulator layer fGCFs. The effectiveness was validated scanning electron microscophy (SEM) energy dispersive X-ray spectroscopy (EDS) elemental analyses, confirmed uniformity Si₃N₄ insulation ensured overall integrity Using finite element analysis, optimized form factor achieve self-penetration up 3 mm into mouse striatum without additional support. characterization fGCFs high conductivity wide window. ability detect using fast scan cyclic voltammetry (FSCV) square wave (SWV), respectively, vitro vivo . With sensitivity detection, combined scalable self-supporting insertion capability, promising sensors offer enhanced practicality comprehensive monitoring.

Язык: Английский

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A first in class disposable copolymer-graphite platform for electrocatalytic detection of dipicrylamine explosive in wastewater and soil samples

Microchemical Journal, Год журнала: 2025, Номер unknown, С. 113930 - 113930

Опубликована: Май 1, 2025

Язык: Английский

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2D magnesium phosphate resorbable coating to enhance cell adhesion on titanium surfaces

Materials Chemistry and Physics, Год журнала: 2024, Номер 316, С. 129114 - 129114

Опубликована: Фев. 27, 2024

Titanium and its alloys are essential metals for orthopedic implant manufacturing due to their exceptional mechanical properties biocompatibility, used extensively treating various conditions. However, (Ti) implants have a disadvantage lack of bioactivity, potentially affecting osseointegration osteoconductive capabilities, may take several months integrate with bone tissue. In this work, we prepared layer 2D magnesium phosphate (MgPi) coating on the surface titanium surfaces via spin-coating technique. Various techniques were study phase composition coatings, including FTIR, Raman spectroscopy, NMR, XRD analysis. Morphology chemical analysis performed using Atomic force microscopy SEM/EDX. Nano-scratch test water contact angle measurements measure adhesion strength wettability. addition, in vitro cell assays assess viability determine how MC3T3-E1 osteoblast-like cells reacted different treated Ti substrates. AFM results showed that roughness became lower after coatings. MgPi-coated samples higher hydrophilicity, protein adsorption, than uncoated samples. The nano-scratch MgPi better adherence chemically thermally compared untreated deposited has good Ti-substrates. Most significantly, control (p < 0.005) coated CT-MgPi 0.005), proliferation was significantly increased thermochemical surfaces. These findings point resorbable two-dimensional coatings as potential candidate promoting osseointegration.

Язык: Английский

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Development of a chitosan-gold nanocomposite based disposable pencil graphite electrode for the selective detection of thiram in peach juice

International Journal of Environmental & Analytical Chemistry, Год журнала: 2024, Номер unknown, С. 1 - 15

Опубликована: Май 13, 2024

Hazardous chemicals that are mostly employed in modern agriculture for pest management have caused long-term environmental accumulation as well major issues with food safety and human health. So, there is an urgent demand efficient detection methods monitoring. To do this, the most contemporary electrochemical sensor technology suggested. In this study, a new has been developed to detect thiram (Th) fungicide, utilising modified activated pencil graphite electrode (a-PGE) made from chitosan-gold nanoparticle polymer (Ch-AuNPs) first time. The Ch-AuNPs/a-PGE surface characterised using cyclic voltammetry (CV), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS). Following adjustments experimental parameters, proposed demonstrated linear calibration curve within range of 4.90–140 μM, displaying rapid response limit 1.15 μM. exhibited notable selectivity, stability, reproducibility. assess its practical utility, was applied analyse peach juice, recovery process indicated effectiveness practical, swift, tool pesticide residue

Язык: Английский

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Sunset Yellow-Cu(II) Complex: DFT-supported electrochemical investigation and determination of Cu(II) ions in human serum and artificial sweat

Microchemical Journal, Год журнала: 2024, Номер 208, С. 112441 - 112441

Опубликована: Дек. 11, 2024

Язык: Английский

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