3D Composite SERS Substrate Constructed by Au-Ag core-satellite NPs and Polystyrene Sphere for Ultrasensitive Ratiometric Raman Detection of Cotinine

Talanta, Journal Year: 2025, Volume and Issue: 289, P. 127742 - 127742

Published: Feb. 14, 2025

Language: Английский

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Triple gap-induced plasmon coupling in Au nanoplate/nanosphere bilayer with strong and uniform electromagnetic hotspots for sensitive and stable SERS detection

Sensors and Actuators B Chemical, Journal Year: 2025, Volume and Issue: unknown, P. 137325 - 137325

Published: Jan. 1, 2025

Language: Английский

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Recent Advances in Chiral Gold Nanomaterials: From Synthesis to Applications

Molecules, Journal Year: 2025, Volume and Issue: 30(4), P. 829 - 829

Published: Feb. 11, 2025

In recent years, the field of chiral gold nanomaterials has witnessed significant advancements driven by their unique properties and diverse applications in various scientific domains. This review provides an in-depth examination synthesis methodologies evolving nanomaterials, which have emerged as vital tools areas such antibacterial therapies, biosensing, catalysis, nanomedicine. We start discussing techniques, focused on seed-mediated growth circularly polarized light-assisted methods, each contributing to controlled nanostructures with tailored optical activities. further delves into these showcasing potential combating antibiotic-resistant bacteria, improving cancer immunotherapy, promoting tissue regeneration, enabling precise biosensing through enhanced sensitivity selectivity. highlight fundamental principles chirality its critical role biological systems, emphasizing importance enhancing signals facilitating molecular interactions. By consolidating findings methodologies, this endeavors illuminate promising future addressing contemporary challenges.

Language: Английский

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Enantioselective synthesis of chiroplasmonic helicoidal nanoparticles by nanoconfinement in chiral dielectric shells

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: March 11, 2025

Helicoid metal nanoparticles with intrinsic chirality have unveiled tailorable properties and unlocked many chirality-related applications across various fields. Nevertheless, the existing strategies for enantioselective synthesis of helicoid been predominantly limited to gold. Here, we demonstrate a robust versatile strategy beyond gold, leveraging chiral nanoconfinement provided by SiO2 or nanoshells. The enables decoupling ligand-directed crystal growth from induction, allowing independent tuning these two critical aspects. As result, this approach can not only facilitate replication shapes nanoshells but also allow generation alternative shapes. By employing approach, Pt, Au@Pt, Au@Pd, Au@Ag, Au@Cu nanoparticles. chiroplasmonic Pt- Pd-based discovered, inversion Ag-based via facet control has documented theoretically explained. enriches toolbox creating supports their exploration in diverse applications. Strategies were mainly authors present helicoidal gold using silica shells.

Language: Английский

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Chiral spiny L-au@ag@ZIF-8 three-layer core-shell SERS substrate for sensitive detection of quinalphos in tangerines

Food Chemistry, Journal Year: 2025, Volume and Issue: unknown, P. 144433 - 144433

Published: April 1, 2025

Language: Английский

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Plasmonic Chirality Meets Reactivity: Challenges and Opportunities

The Journal of Physical Chemistry C, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 6, 2025

The unique optoelectronic features associated with plasmonic nanomaterials in a broad energy range of the electromagnetic spectrum have potential to overcome current limitations development heterogeneous photocatalytic systems enantioselective capabilities. Recent advancements creating structures strong chiroptical already enabled asymmetric recognition molecular substrates or even polarization-sensitive chemical reactivity under visible and near-infrared irradiation. Nevertheless, important developments need be achieved attain real solely driven by plasmons. This Perspective discusses trends formation chiral materials their application as photocatalysts achieve stereocontrol photochemical reactions. We summarize challenges this field offer insight into future opportunities that could enhance effectiveness these innovative systems.

Language: Английский

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Molecular Coverage Modulates Chiral Surface-Enhanced Raman Scattering on Chiral Plasmonic Nanoparticles

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

Published: April 4, 2025

Sensitive recognition of enantiomer has aroused extensive interest due to its importance in diverse fields ranging from pharmaceuticals catalysis and biomedicine. Chiral surface-enhanced Raman scattering (SERS) by chiral plasmonic substrates emerged as a promising tool for the enantiomers with high sensitivity well molecular fingerprinting capability. However, impact states including surface packing density configurations surface-adsorbed molecules on SERS been largely unexplored. Herein, we demonstrate that nanoparticles (NPs) is sensitively dependent coverage enantiomers. Au helical nanocubes tunable optical properties intense near-field enhancements were chosen SERS. By changing concentration structure enantiomers, revealed. Finally, use achiral internal spacers achieving ultrasensitive detection enantiomer. The insights gained this work not only shed light underlying mechanisms dictating NPs but also strongly suggest approach sensitive chirality using spectroscopy.

Language: Английский

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Chirality Quantification for High‐Performance Nanophotonic Biosensors

Small Methods, Journal Year: 2025, Volume and Issue: unknown

Published: April 8, 2025

Abstract Recent advancements in chiral metabolomics have facilitated the discovery of disease biomarkers through enantioselective measurement metabolites, offering new opportunities for diagnosis, prognosis, and personalized medicine. Although photonic nanomaterials emerged as promising platforms biosensing, enhancing sensitivity enabling detection biomolecules at extremely low concentrations, a deeper understanding relationship between structural optical chirality is crucial optimizing these platforms. This perspective examines recent methods quantifying chirality, including Hausdorff Chirality Measure (HCM), Continuous (CCM), Osipov‐Pickup‐Dunmur (OPD), Graph‐Theoretical (GTC) measure. These approaches advanced both materials biomolecules, well its correlation with responses. work emphasizes role quantification improving biosensor performance explores potential near‐field chiroptical studies to enhance sensor capabilities. Finally, this addresses key challenges outline future research directions advancing biosensors, focus on nano‐bio interface interactions drive development next‐generation sensing technologies.

Language: Английский

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Rapid and sensitive detection of malachite green by multifunctional octahedron UiO- 66-NH2/Fe3O4/Ag SERS substrate

Microchimica Acta, Journal Year: 2025, Volume and Issue: 192(5)

Published: April 17, 2025

Language: Английский

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Quantitative immunoassay of prostate-specific antigen dependent on SERS substrate of polymer-silver nanocubes modified with 4-mercaptobenzoic acid: the crucial effect of thiol molecule as internal standard

Talanta, Journal Year: 2025, Volume and Issue: 294, P. 128252 - 128252

Published: May 1, 2025

Language: Английский

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