Surface-Enhanced Raman Spectroscopy for the Detection of Reactive Oxygen Species

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 8, 2025

Reactive oxygen species (ROS) play fundamental roles in various biological and chemical processes nature industries, including cell signaling, disease development aging, immune defenses, environmental remediation, pharmaceutical syntheses, metal corrosion, energy production, etc. As such, their detection is of paramount importance, but accurate identification quantification are technically challenging due to transient with short lifetimes low steady-state concentrations. a highly sensitive selective analytical technique, surface-enhanced Raman spectroscopy (SERS) promising for detecting ROS real-time, enabling situ monitoring ROS-involved electrochemical biochemical events exceptional resolution. This review provides comprehensive analysis the state-of-the-art SERS-based ROS. Herein, principles sensing mechanisms SERS have been critically evaluated, highlighting emerging applications direct indirect systems. The developments reaction schemes probes superoxide (•O2–), hydroxyl radicals (•OH), nitric oxide (•NO), peroxynitrite (ONOO–), hypochlorite (OCl–) presented. Finally, technical challenges future research directions discussed guide design analysis.

Language: Английский

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Enhanced Charge Transfer and Coupled Resonance in Ni-doped sub-stoichiometric Tungsten Oxide Nanostructure for Plasmon-free SERS Sensing

Materials Today Nano, Journal Year: 2025, Volume and Issue: unknown, P. 100593 - 100593

Published: Feb. 1, 2025

Language: Английский

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Novel Clean-Background Coffee Ring SERS Platform for Trace Toxin Analysis

Analytical Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: March 7, 2025

Biotoxins, known for their ubiquity and potent toxicity, pose significant threats to ecosystems human health, highlighting the urgency development of robust detection methods. Despite potential surface-enhanced Raman spectroscopy (SERS) in analytical science, challenges emerge when dealing with low active molecules, such as biotoxins. Our study addresses this by introducing an innovative, ultrasensitive, clean-background coffee ring SERS (CC-SERS) platform, specifically designed neo-saxitoxin (neo-STX), saxitoxin (STX), microcystin-LR (MC-LR), microcystin-RR (MC-RR) using AgNPs@Ag2O@AgCl rings. By fine-tuning surface ligands laser wavelength, a clean background was obtained accurate The CC-SERS platform exhibited strong linear response STX, neo-STX microcystins (MC-LR MC-RR) limit (LOD, 3δ/k) 3.3, 1.3, 2.2 nM, respectively. employing principal component analysis (PCA), we effectively differentiated between highly similar biotoxins, ensuring precise identification within complex samples. accuracy sensitivity were validated through high-performance liquid chromatography (HPLC) chromatography–mass spectrometry (HPLC-MS) real samples, indicating its promising application food safety.

Language: Английский

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Surface-Enhanced Raman Spectroscopy for Nitrite Detection

Journal of Agricultural and Food Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 13, 2025

Nitrite is an important chemical intermediate in the nitrogen cycle and ubiquitously present environmental biological systems as a metabolite or additive agricultural food industries. However, nitrite can also be toxic excessive concentrations. As such, development of quick, sensitive, portable assays for its measurement desirable. In this review, we summarize working principles applications surface-enhanced Raman spectroscopy (SERS) rapid, portable, ultrasensitive method detection showcase applicability various water, food, samples. The challenges opportunities future developments are discussed.

Language: Английский

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Polyethyleneimine-assisted one-pot synthesis of Au nanodendrites on carbon nanotube sheet as an efficient SERS substrate

Microchimica Acta, Journal Year: 2025, Volume and Issue: 192(2)

Published: Jan. 8, 2025

Language: Английский

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Water-Assisted Chemical Sintering of Vanadium Dioxide Powder and Its Use for Eicosane Detection

Ceramics International, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Language: Английский

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Highly reproducible nanofilms assembled from quaternary ammonium polymer-functionalized graphene oxide and gold nanoparticles for sensitive SERS detection of antibiotics

Applied Surface Science, Journal Year: 2025, Volume and Issue: unknown, P. 162390 - 162390

Published: Jan. 1, 2025

Language: Английский

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Efficient Simulation of Surface-Enhanced Raman Scattering with a Simplified Damped Response Theory

Journal of Chemical Theory and Computation, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 18, 2025

Theoretical studies on enhancement mechanisms of surface-enhanced Raman scattering (SERS) are usually carried out with full quantum mechanical methods to capture the specific interactions between molecules and substrates. However, due computational costs like time-dependent density functional theory (TDDFT), simplified model systems commonly adopted. In framework TDDFT, damped response is invoked give a unified description both on- off-resonance spectra based calculation polarizability derivatives. TDDFT allow for modeling SERS only using small metal clusters. this work, we demonstrate implementation an efficient method that simplifies calculations simulation spectra. This named as TBAOResponse. We first compare absorption regular system calculated TBAOResponse benchmark new method. Then, efficiency accuracy by comparing different methods. Compared while significant improvement achieved, maintains good calculation. further showcase calculating computationally demanding TDDFT. promising when substrate molecule necessary.

Language: Английский

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Impact of adsorbed molecules on the relative intensity of surface-enhanced Raman scattering

Physical review. B./Physical review. B, Journal Year: 2025, Volume and Issue: 111(7)

Published: Feb. 25, 2025

Language: Английский

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DNA‑Directed Assembly of Photonic Nanomaterials for Diagnostic and Therapeutic Applications

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 19, 2025

Abstract DNA‐directed assembly has emerged as a versatile and powerful approach for constructing complex structured materials. By leveraging the programmability of DNA nanotechnology, highly organized photonic systems can be developed to optimize light‐matter interactions improved diagnostics therapeutic outcomes. These enable precise spatial arrangement components, minimizing material usage, simplifying fabrication processes. nanostructures, such origami, provide robust platform building multifunctional devices with tailored optical properties. This review highlights recent progress in nanomaterials, focusing on their applications therapeutics. It provides an overview latest advancements field, discussing principles assembly, strategies functionalizing blocks, innovations design, resulting effects that drive these developments. The also explores how architectures contribute diagnostic applications, emphasizing potential create efficient effective specific healthcare needs.

Language: Английский

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