Category Ranking
98%
Total Visits
921
Avg Visit Duration
2 minutes
Citations
20
Article Abstract
Plasmonic nanomaterials with intrinsic chiral morphology represent a profound and intriguing topic in sensing applications due to their ultrasensitive chiral structure-dependent chiroptical activity. Here, an HO-assisted etching strategy is reported, enabling the tunable chiroptical activity of chiral helicoid Au nanocrystals by varying size and morphology. This approach forms the foundation of a chiroplasmonic sensing method leveraging the chiroptical signal response induced by morphological changes. Notably, the method exhibits excellent anti-interference performance, enabling reliable detection in complex and colored sample environments. Moreover, the strategy is extended for glucose detection through glucose oxidase-catalyzed HO production, with quantitative detection in real colored samples confirming its reliability. The chiroplasmonic sensing based on helicoid Au nanocrystal etching exhibits remarkable detection performance in complex environments, offering the potential for practical applications in biochemical analysis and diagnostics.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/smll.202500888 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Concavity-enhanced chiral self-assembly of anisotropic nanoparticles toward strong chiroptical activity.
Nat Commun
July 2025
Beijing National Laboratory for Molecular Sciences (BNLMS), College of Chemistry and Molecular Engineering, Peking University, Beijing, China.
Chiral plasmonic nanomaterials have attracted significant attention due to their fascinating chiroptical properties and promising applications including chiral sensing, asymmetric catalysis, biomedicine, and chiroptics. Self-assembly of plasmonic nanoparticles is promising for constructing chiroplasmonic nanomaterials, but it remains challenging to obtain homochiral assemblies with high optical asymmetry. Here, gold nanodumbbells featuring a concave morphology are employed as achiral building blocks for controllable self-assembly into stable homochiral assemblies exhibiting strong chiroptical activity.
View Article and Find Full Text PDFEtching-Based Chiroplasmonic Sensing with Helicoid Au Nanocrystals for Anti-Interference Biochemical Detection.
Small
July 2025
State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.
Plasmonic nanomaterials with intrinsic chiral morphology represent a profound and intriguing topic in sensing applications due to their ultrasensitive chiral structure-dependent chiroptical activity. Here, an HO-assisted etching strategy is reported, enabling the tunable chiroptical activity of chiral helicoid Au nanocrystals by varying size and morphology. This approach forms the foundation of a chiroplasmonic sensing method leveraging the chiroptical signal response induced by morphological changes.
View Article and Find Full Text PDFMechanically Driven, Continuous Synthesis of Chiroplasmonic Assemblies.
J Am Chem Soc
November 2024
Department of Anesthesiology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230026, China.
Chiral plasmonic nanomaterials─with their significant applications in protein detection, drug screening, and enantioselective sensing─necessitate an industrialized fabrication procedure to enhance their commercial viability. However, the prevailing manufacturing of chiral plasmonic nanoparticles and assemblies heavily leans on manual intervention, causing time-consuming and quality-inconsistent concerns. Here, we develop an automated, continuous mechanical synthesis system that consistently sprays metal nanowires to create chiroplasmonic assemblies: a macroscopic twisted layered structure comprising equivalent linear birefringence layers, approximate linear polarizer layers, and a precise angular offset between them.
View Article and Find Full Text PDFEngineering the Intrinsic Chirality of Plasmonic Au@Pd Metamaterials for Highly Sensitive Chiroplasmonic Hydrogen Sensing.
Adv Mater
December 2023
State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.
Metal helicoid nanoparticles with intrinsic 3D chiral structures have emerged as a new class of plasmonic metamaterials with outstanding chiroplasmonic properties. Despite the considerable potential of metal helicoid nanoparticles in chiroplasmonic sensing, their sensing capabilities remain elusive, stressing the need for the rational chirality engineering of helicoid nanoparticles. In this report, Au@Pd helicoid nanoparticles with engineered chiroplasmonic properties and integrated hydrogen sensing capabilities are rationally synthesized.
View Article and Find Full Text PDFChiro-optical response of a wafer scale metamaterial with ellipsoidal metal nanoparticles.
Nanotechnology
May 2021
Centre for Nano Science and Engineering, Indian Institute of Science, Bangalore, India.
We report a large chiro-optical response from a nanostructured film of aperiodic dielectric helices decorated with ellipsoidal metal nanoparticles. The influence of the inherent fabrication variation on the chiro-optical response of the wafer-scalable nanostructured film is investigated using a computational model which closely mimics the material system. From the computational approach, we found that the chiro-optical signal is strongly dependent on the ellipticities of the metal nanoparticles and the developed computational model can account for all the variations caused by the fabrication process.
View Article and Find Full Text PDF