Shell Dependence of Highly Tunable Circular Dichroism in Chiral Hybrid Plasmonic Nanomaterials for Chiroptical Applications

ACS Nano, Год журнала: 2025, Номер unknown

Опубликована: Янв. 9, 2025

Chiral plasmonic nanomaterials with fascinating physical and chemical properties show emerging chirality-dependent applications in photonics, catalysis, sensing. The capability to precisely manipulate the chirality a broad spectral range plays crucial role enabling of chiral diverse complex scenarios; however, it remains challenge yet be addressed. Here we demonstrate strategy significantly enhance tunability circular dichroism (CD) spectra by constructing core-shell hybrid metal-semiconductor structures tailored shells. In typical case, Au@Cu

Язык: Английский

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Recent Advances in Chiral Gold Nanomaterials: From Synthesis to Applications

Molecules, Год журнала: 2025, Номер 30(4), С. 829 - 829

Опубликована: Фев. 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.

Язык: Английский

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

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Март 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.

Язык: Английский

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Boosting the Selectivity in Oxygen Electrocatalysis Using Chiral Nanoparticles as Electron-Spin Filters

Journal of the American Chemical Society, Год журнала: 2025, Номер unknown

Опубликована: Апрель 11, 2025

Controlling the electron spin of oxygen-containing intermediates is crucial for efficient oxygen electrocatalysis toward clean energy technologies such as fuel cells and water electrolysis. Current strategies controlling spins rely mainly on tuning chemical structure electrocatalyst, which often hardly achieved metal oxide electrocatalysts. The chiral-induced selectivity (CISS) effect, a significant discovery in chiral spintronics, represents an alternative approach Here we demonstrate use intrinsic nanoparticles electron-spin filters to tune electrocatalytic reactions. Chiral Au with concave vortex cube were employed substrate, exhibiting highly tunable optical chirality intriguing CISS-like effect. As model systems, catalytically active components Pt or Ni(OH)2 are overgrown onto construct hybrid Remarkably, both cases show chirality-dependent activities over reduction/evolution reactions, respectively. insights gained from this work not only shed light underlying mechanisms dictating CISS-enhanced by but also provide important knowledge framework that guides rational design electrocatalysts electrocatalysis.

Язык: Английский

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Etching‐Based Chiroplasmonic Sensing with Helicoid Au Nanocrystals for Anti‐Interference Biochemical Detection

Small, Год журнала: 2025, Номер unknown

Опубликована: Май 12, 2025

Abstract Plasmonic nanomaterials with intrinsic chiral morphology represent a profound and intriguing topic in sensing applications due to their ultrasensitive structure‐dependent chiroptical activity. Here, an H 2 O ‐assisted etching strategy is reported, enabling the tunable activity of helicoid Au nanocrystals by varying size morphology. This approach forms foundation chiroplasmonic method leveraging signal response induced morphological changes. Notably, exhibits excellent anti‐interference performance, reliable detection complex colored sample environments. Moreover, extended for glucose through oxidase‐catalyzed production, quantitative real samples confirming its reliability. The based on nanocrystal remarkable performance environments, offering potential practical biochemical analysis diagnostics.

Язык: Английский

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