Machine Learning-Driven Surface Plasmon-Enhanced Dual Spectroscopies Improve Recognition and Real-Time Monitoring of Hazardous Chemicals DOI
Yanyan Lu, Yu Qiao, Haoming Bao

et al.

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

Published: April 11, 2025

To address the challenges of precise identification and real-time monitoring hazardous chemicals, this work proposes develops surface-plasmon-enhanced dual spectroscopies (SPEDS). This technique combines highly recognizable surface-enhanced Raman spectroscopy (SERS) with plasmon-mediated differential ultraviolet-visible (P-DUS). The feasibility is demonstrated by successfully acquiring SPEDS signals thiourea a plasmonic gold colloidal system. By combining machine learning algorithms, we achieve accurate quantification accuracies 98.2 98.6%, respectively, significantly outperforming single P-DUS (63.2 95.1%) SERS (80.3 86.5%). Additionally, demonstrate universality expandability through other nanostructures various shapes surface modifications. Using CuS-coated Au nanoarray, multiple 8-h sessions Hg2+ good anti-interference robust quantification, thereby highlighting practical potential in real-world applications. These results position as cutting-edge multifunctional chemical sensing platform, unlocking transformative possibilities for advancing environmental monitoring, industrial safety, public health.

Language: Английский

Cu2+-Dominated Chirality Transfer from Chiral Molecules to Concave Chiral Au Nanoparticles DOI

Jinling Wan,

Lichao Sun,

Xuehao Sun

et al.

Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(15), P. 10640 - 10654

Published: April 3, 2024

Foreign ions as additives are of great significance for realizing excellent control over the morphology noble metal nanostructures in state-of-the-art seed-mediated growth method; however, they remain largely unexplored chiral synthesis. Here, we report on a Cu2+-dominated strategy that can direct concave Au nanoparticles with C3-dominant centers. The introduction trace amounts Cu2+ process is found to dominate chirality transfer from molecules nanoparticles, leading formation VC geometry. Both experimental and theoretical results further demonstrate correlation between nanoparticle structure optical nanoparticle. ion by selectively activating deposition atoms along [110] [111] directions, facilitating VC. We be employed generate variety enriched geometric desired chiroptical properties. Concave also exhibit appealing catalytic activity selectivity toward electrocatalytic oxidation enantiomers comparison helicoidal nanoparticles. ability tune controlled manner simply manipulating opens up promising creating nanomaterials increasing architectural diversity chirality-dependent applications.

Language: Английский

Citations

23
Tuning the Geometry and Optical Chirality of Pentatwinned Au Nanoparticles with 5-Fold Rotational Symmetry DOI

Xuehao Sun,

Lichao Sun,

Lifei Lin

et al.

ACS Nano, Journal Year: 2024, Volume and Issue: 18(13), P. 9543 - 9556

Published: March 22, 2024

Chirality transfer from chiral molecules to nanomaterials represents an important topic for exploring the origin of chirality in many natural and artificial systems. Moreover, developing a promising class holds great significance various applications, including sensing, photonics, catalysis, biomedicine. Here we demonstrate geometric control tunable optical pentatwinned Au nanoparticles with 5-fold rotational symmetry using seed-mediated growth method. A distinctive pathway are observed decahedra as seeds, comparison single-crystal seeds. By employing different peptides inducers, two distinct (pentagonal nanostars pentagonal prisms) obtained. The intriguing formation evolution twinned structure analyzed crystallographic perspective upon maneuvering interplay molecules, surfactants, reducing agents. interesting effects molecular on tuning also explored. Finally, theoretically experimentally investigate far-field near-field properties through numerical simulations single-particle chiroptical measurements. ability tune controlled manner step toward development increasing architectural complexity applications.

Language: Английский

Citations

16
Chiral Au Nanorods: Synthesis, Chirality Origin, and Applications DOI
Shenli Wang, Xing Liu, Stefanos Mourdikoudis

et al.

ACS Nano, Journal Year: 2022, Volume and Issue: 16(12), P. 19789 - 19809

Published: Dec. 1, 2022

Chiral Au nanorods (c-Au NRs) with diverse architectures constitute an interesting nanospecies in the field of chiral nanophotonics. The numerous possible plasmonic behaviors NRs can be coupled chirality to initiate, tune, and amplify their chiroptical response. Interdisciplinary technologies have boosted development fabrication applications c-Au NRs. Herein, we focused on role which helps manipulate light–matter interaction nontraditional ways. A broad overview origin, transfer, activities, artificially synthetic methodologies, circularly polarized will summarized discussed. deeper understanding help at nanoscale, reveal natural evolution process taking place, set up a series applications.

Language: Английский

Citations

52
Tunable Reversal of Circular Dichroism in the Seed-Mediated Growth of Bichiral Plasmonic Nanoparticles DOI

Xuehao Sun,

Jian Yang, Lichao Sun

et al.

ACS Nano, Journal Year: 2022, Volume and Issue: 16(11), P. 19174 - 19186

Published: Oct. 17, 2022

Plasmonic nanoparticles with an intrinsic chiral structure have emerged as a promising platform for applications in biosensing, medicine, catalysis, separation, and photonics. Quantitative understanding of the correlation between nanoparticle optical chirality becomes increasingly important but still represents significantly challenging task. Here we demonstrate that tunable signal reversal circular dichroism seed-mediated growth plasmonic can be achieved through hybridization bichiral centers without inverting geometric chirality. Both experimental theoretical results demonstrated opposite sign two different geometries. Chiral molecules were found to not only contribute transfer from also manipulate structural evolution synergistically drive formation centers. By deliberately adjusting concentration other synthetic parameters, such reducing agent concentration, capping surfactant amount Au precursor, been able fine-tune nanoparticles. We further crystal seeds play crucial roles The insights gained this work shed light on underlying mechanisms dictating intriguing provide knowledge framework guides rational design nanostructures toward chiroptical applications.

Language: Английский

Citations

49
SERS-active plasmonic metal NP-CsPbX3 films for multiple veterinary drug residues detection DOI
Yuan Zhao,

Yinjuan Xu,

Xiaohui Jing

et al.

Food Chemistry, Journal Year: 2023, Volume and Issue: 412, P. 135420 - 135420

Published: Jan. 6, 2023

Language: Английский

Citations

32
Gold nanoparticle shape dependence of colloidal stability domains DOI Creative Commons

Antonio Carone,

Samuel Emilsson,

Pablo Mariani

et al.

Nanoscale Advances, Journal Year: 2023, Volume and Issue: 5(7), P. 2017 - 2026

Published: Jan. 1, 2023

Controlling the spatial arrangement of plasmonic nanoparticles is particular interest to utilize inter-particle coupling, which allows changing their optical properties. For bottom-up approaches, colloidal are interesting building blocks generate more complex structures via controlled self-assembly using destabilization particles. noble metal nanoparticles, cationic surfactants, such as CTAB, widely used in synthesis, both shaping and stabilizing agents. In a context, understanding predicting stability system solely composed AuNPs CTAB fundamentally crucial. Here, we tried rationalize particle behavior by reporting diagrams gold nanostructures taking into account parameters size, shape, CTAB/AuNP concentration. We found that overall was dependent on shape with presence sharp tips being source instability. all morphologies evaluated here, metastable area systematically observed, aggregated way while maintaining stability. Combining different strategies help transmission electron microscopy, zones addressed. Finally, controlling experimental conditions previously obtained diagrams, were able obtain linear rather good control over number particles participating assembly

Language: Английский

Citations

31
Chiral metal nanostructures: synthesis, properties and applications DOI

Sulaiman Umar Abbas,

Junjun Li, Xing Liu

et al.

Rare Metals, Journal Year: 2023, Volume and Issue: 42(8), P. 2489 - 2515

Published: May 29, 2023

Language: Английский

Citations

26
Site‐Selective Chiral Growth of Anisotropic Au Triangular Nanoplates for Tuning the Optical Chirality DOI

Yunlong Tao,

Lichao Sun, Chuang Liu

et al.

Small, Journal Year: 2023, Volume and Issue: 19(30)

Published: April 8, 2023

Site-selective chiral growth of anisotropic nanoparticles is great importance to realize the plasmonic nanostructures with delicate geometry and desired optical chirality; however, it remains largely unexplored. This work demonstrates a controlled site-selective system based on seed-mediated Au triangular nanoplates. The involves two distinct underlying pathways, faceted island growth, which are interswitchable upon maneuvering interplay molecules, surfactants, reducing agents. pathway switch governs geometric chirality evolution nanoplates, giving rise tailorable circular dichroism spectra. ability tune in manner by manipulating opens up promising strategy for exploiting metamaterials increasing architectural complexity chiroptical applications.

Language: Английский

Citations

25
Antimicrobial activity of metal-based nanoparticles: a mini-review DOI
Marharyta Hancharova, Kinga Halicka,

Aleksandra Dupla

et al.

BioMetals, Journal Year: 2024, Volume and Issue: 37(4), P. 773 - 801

Published: Jan. 29, 2024

Language: Английский

Citations

9
The intriguing role of l-cysteine in the modulation of chiroplasmonic properties of chiral gold nano-arrows DOI Creative Commons

Nada Khalfaoui-Hassani,

Mary Tabut,

Ndeye Haby Awe

et al.

Nanoscale, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Morphology control and chiroptical inversion depending on the cysteine concentration.

Language: Английский

Citations

1