Substrate‐Mediated Growth of Au Nanowires Under Weak CTAB Control and Rapid Au Deposition DOI Open Access
Xiaobin Liu, Haotong Zhang,

Zhouling Wu

et al.

Small Methods, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 30, 2024

The selective Au deposition at the Au-substrate interface is known to give ultrathin nanowires and synthesis usually employs strong thiol-based ligands. It shown that, by increasing rate of deposition, weak cetyltrimethylammonium bromide (CTAB) can be made behave like a ligand, so that it induces Active Surface Growth gives nanowires. ligand strength also depends on packing interactions in layer, order C

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
Beyond conventional: Role of chiral metal–organic frameworks in asymmetric scenarios DOI

Maryam Chafiq,

Abdelkarim Chaouiki, Jungho Ryu

et al.

Nano Today, Journal Year: 2024, Volume and Issue: 56, P. 102227 - 102227

Published: March 18, 2024

Language: Английский

Citations

17
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
Shell Dependence of Highly Tunable Circular Dichroism in Chiral Hybrid Plasmonic Nanomaterials for Chiroptical Applications DOI

Guizeng Yang,

Yunlong Tao,

Qingqing Cheng

et al.

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

Published: Jan. 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

Language: Английский

Citations

1
532- and 52-symmetric Au helicoids synthesized through controlled seed twinning and aspect ratio DOI Creative Commons
Jack S. Googasian,

Maxwell P. Perkins,

Jun Chen

et al.

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

Published: Jan. 1, 2025

Chiral plasmonic crystals with 5-fold symmetries were synthesized from Au icosahedra, decahedra, and pentatwinned nanorods, unraveling the effects of seed twinning aspect ratio on chiral overgrowth directed by l -glutathione.

Language: Английский

Citations

1
Engineering the Intrinsic Chirality of Plasmonic Au@Pd Metamaterials for Highly Sensitive Chiroplasmonic Hydrogen Sensing DOI Open Access

Xiali Lv,

Fengxia Wu, Yu Tian

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 35(51)

Published: Aug. 2, 2023

Metal helicoid nanoparticles with intrinsic 3D chiral structures have emerged as a new class of plasmonic metamaterials outstanding chiroplasmonic properties. Despite the considerable potential metal in sensing, their sensing capabilities remain elusive, stressing need for rational chirality engineering nanoparticles. In this report, Au@Pd engineered properties and integrated hydrogen are rationally synthesized. As metamaterials, exhibit unprecedented sensitivity visible range. A significant circular dichroism red-shift large 206.1 nm can be achieved when they exposed to hydrogen. Such high outperforms all sensors Besides sensitivity, platform shows good linear range 1.5-6.0% concentration higher figure merit, excellent selectivity, reusability. To further demonstrate its applicability, is utilized investigate absorption desorption kinetics on Pd. This study heralds paradigm highlights tremendous utilizing by engineering.

Language: Английский

Citations

22
Tuning the Plexcitonic Optical Chirality Using Discrete Structurally Chiral Plasmonic Nanoparticles DOI
Qingqing Cheng, Jian Yang,

Lichao Sun

et al.

Nano Letters, Journal Year: 2023, Volume and Issue: 23(23), P. 11376 - 11384

Published: Dec. 1, 2023

Constructing chiral plexcitonic systems with tunable plasmon–exciton coupling may advance the scientific exploitation of strong light–matter interactions. Because their intriguing chiroptical properties, plasmonic materials have shown promising applications in photonics, sensing, and biomedicine. However, nanoparticles excitons remains largely unexplored. Here we demonstrate construction a system using AuAg nanorods J aggregates for tuning optical chirality. Circular dichroism spectroscopy was employed to characterize coupling, which Rabi splitting anticrossing behaviors were observed, whereas extinction spectra exhibited less prominent phenomena. By controlling number molecular energy detuning between plasmons excitons, been able fine-tune The ability chirality opens up unique opportunities exploring interactions boosting development emerging devices.

Language: Английский

Citations

18
Geometric Control and Optical Properties of Intrinsically Chiral Plasmonic Nanomaterials DOI Open Access
Lichao Sun,

Yunlong Tao,

Guizeng Yang

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: unknown

Published: Aug. 12, 2023

Abstract Intrinsically chiral plasmonic nanomaterials exhibit intriguing geometry‐dependent chiroptical properties, which is due to the combination of features with geometric chirality. Thus, have become promising candidates for applications in biosensing, asymmetric catalysis, biomedicine, photonics, etc. Recent advances control and optical tuning intrinsically further opened up a unique opportunity their widespread many emerging technological areas. Here, recent developments are reviewed special attention given quantitative understanding structure‐property relationship. Several important spectroscopic tools characterizing chirality at both ensemble single‐particle levels also discussed. Three nanomaterials, including enantioselective sensing, highlighted. It envisioned that these advanced studies will pave way toward rational design desired properties diverse applications.

Language: Английский

Citations

17
Chiral AuCu heterostructures with site-specific geometric control and tailored plasmonic chirality DOI

Guizeng Yang,

Lichao Sun,

Yunlong Tao

et al.

Science China Chemistry, Journal Year: 2023, Volume and Issue: 66(11), P. 3280 - 3289

Published: July 10, 2023

Language: Английский

Citations

16
Tuning chiral morphology of gold nanoparticles with reversed chiral signals by adjusting the reaction temperature of the seed-mediated growth process DOI
Qingyuan Liu, Miao Zhang, Chunli Xu

et al.

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: 12(21), P. 7667 - 7672

Published: Jan. 1, 2024

Reaction temperature was found to reverse the chiral modes of gold nanoparticles (AuNPs) prepared through seed-mediated and ligand-directed growth method.

Language: Английский

Citations

5