Sensitive Detection of Perfluoroalkyl Substances Using MXene–AgNP-Based Electrochemical Sensors

ACS Sensors, Journal Year: 2024, Volume and Issue: 9(6), P. 3403 - 3412

Published: June 3, 2024

Per- and polyfluoroalkyl substances (PFAS) pose a significant threat to the environment due their persistence, ability bioaccumulate, harmful effects. Methods quantify PFAS rapidly effectively are essential analyze track contamination, but measuring down ultralow regulatory levels is extremely challenging. Here, we describe development of low-cost sensor that can measure representative PFAS, perfluorooctanesulfonic acid (PFOS), at parts per quadrillion (ppq) level within 5 min. The method combines PFOS bind silver nanoparticles (AgNPs) embedded fluorine-rich Ti3C2-based multilayered MXene, which provides large surface area accessible binding sites for direct impedimetric detection. Fundamentally, show MXene–AgNPs capable other long-chain compounds, though synergistic action AgNPs MXenes via electrostatic F–F interactions. This induced concentration-dependent changes in charge-transfer resistance, enabling rapid quantification with high sensitivity no response interferences. displayed linear range from 50 ppq 1.6 ppt (parts trillion) an impressively low limit detection 33 99 ppq, making this promising candidate screening content water samples, using simple inexpensive procedure.

Language: Английский

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Recent progress in per- and polyfluoroalkyl substances (PFAS) sensing: A critical mini-review

Sensors and Actuators Reports, Journal Year: 2024, Volume and Issue: 7, P. 100189 - 100189

Published: March 1, 2024

Per- and polyfluoroalkyl substances (PFAS) are a class of fluorinated pollutants found widely in numerous industrial consumer products. Their excellent heat, oil, water resistance slow degradation rate nature lead to their persistent environmental accumulation with potential adverse impacts on various organisms, including humans. Although the current EPA-approved PFAS detection method is elegant ultrasensitive, its broader application greatly limited due associated high costs, lengthy times, skilled personnel requirements. Hence, there strong demand for rapid, robust, low-cost, accessible methods expedite treatment contaminated media control exposure these emerging substances. Since publication our first sensing review 2021, new sensors have been developed reported. Consequently, this critical primarily focuses recent advancements platforms, encompassing optical-based, electrochemical-based, other novel principle-based systems, as well those that complement liquid chromatography coupled tandem mass spectrometry, gold standard detection. The underlying mechanisms, performances, areas improvement thoroughly discussed. We hope article offers readers alternative systems years inspires future innovations field-deployable technology.

Language: Английский

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Per- and polyfluoroalkyl substances (PFAS) and cancer: Detection methodologies, epidemiological insights, potential carcinogenic mechanisms, and future perspectives

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 953, P. 176158 - 176158

Published: Sept. 8, 2024

Language: Английский

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Cationic covalent organic framework for the fluorescent sensing and cooperative adsorption of perfluorooctanoic acid

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Dec. 2, 2024

Language: Английский

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Sensitive fluorescent detection of phosmet and chlortetracycline in animal-derived food samples based on a water-stable Cd(II) chain-based zwitterionic metal-organic framework

Analytica Chimica Acta, Journal Year: 2023, Volume and Issue: 1280, P. 341850 - 341850

Published: Sept. 28, 2023

Language: Английский

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Detection of Per‐ and Polyfluoroalkyl Substances (PFAS) by Interrupted Energy Transfer

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(47)

Published: Oct. 5, 2023

Abstract The ubiquitous presence of per‐ and polyfluoroalkyl substances (PFAS) in aqueous environments has aroused societal concern. Nonetheless, effective sensing technologies for continuous monitoring PFAS within water distribution infrastructures currently do not exist. Herein, we describe a ratiometric approach to selectively detect perfluorooctanoic acid (PFOA) perfluorooctane sulfonate (PFOS) at concentrations μg ⋅ L −1 . Our method relies on the excitonic transport highly fluorinated poly(p‐phenylene ethynylene) amplify emission signal modulated by an embedded squaraine dye. electronic coupling between polymer dye occurs through overlap π‐orbitals is designed such that energy transfer dominated electron‐exchange (Dexter) mechanism. Exposure solutions perturbs orbital interactions backbone, thereby diminishing efficiency producing “polymer‐ON/dye‐OFF” response. These polymer/dye combinations were evaluated spin‐coated films nanoparticles able ca. 150 ppb 50 ppb, respectively. Both are affected type water, similar responses found milliQ well water.

Language: Английский

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Fast and Selective Luminescent Sensing by Langmuir–Schaeffer Films Based on Controlled Assembly of Perylene Bisimide Modified with A Cyclometalated Au^III Complex

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(52)

Published: Nov. 15, 2023

Condensed films of functional luminophores dominated by the magnitude and dimensionality intermolecular interactions play important roles in sensing performance. However, controlling molecular assembly regulating photophysical properties remain challenging. In this study, a new luminophore, ortho-PBI-Au, was synthesized anchoring cyclometalated alkynyl-gold(III) unit at ortho-position perylene bisimide. An unprecedented T-type packing model driven weak Au-π interaction Au-H bonds observed, laying foundation for striking luminophore. Controlled ortho-PBI-Au air-water interface, realized using classical Langmuir-Schaeffer technique, afforded obtained luminescent with different structures. With an optimized film, sensitive, selective, rapid detection hazardous psychoactive substance, phenylethylamine (PEA), achieved. The limit, response time, recovery time were <4 ppb, <1 s, <5 respectively, surpassing performance PEA sensors known thus far. relationship between characters systematically examined grey relational analysis (GRA). present study suggests that designing novel aggregation definite adlayer structure is crucial strategy to enhance performance, which could be favorable film-based fluorescent sensors.

Language: Английский

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β-cyclodextrin imprinted film embedded with methylene blue: A host-guest sensitive electrochemical strategy for PFAS detection

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 485, P. 136870 - 136870

Published: Dec. 13, 2024

Language: Английский

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Recent advances in structurally elaborate triptycenes, triptycene-containing polymers and assemblies: structures, functions and applications

Polymer Journal, Journal Year: 2024, Volume and Issue: 56(9), P. 791 - 818

Published: May 29, 2024

Abstract Triptycene, a rigid propeller-shaped molecule, was first synthesized in the early 1940s. More recently, many triptycene-containing polymers and molecular assemblies have been developed for wide range of applications, including guest recognition, material transport, separation, catalysis, as device components. The advantages triptycenes lie their ability to introduce variety functional groups on three-dimensional backbone, with changes substitution patterns well type substituents present having significant impact properties. In this review, we describe synthesis triptycene derivatives polymers, detailing selected examples polymers. We also focus construction triptycene-based two-dimensional where space-filling designs based skeletons are essential. Through thorough literature survey, future directions possibilities development materials discussed.

Language: Английский

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Revolutionizing per- and polyfluoroalkyl substance identification using nanopores: a leap towards environmental health at the single-molecule level

Science Bulletin, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

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