Coupling of plasmonic hot spots with shurikens for superchiral SERS-based enantiomer recognition

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F23%3A43928137" target="_blank" >RIV/60461373:22310/23:43928137 - isvavai.cz</a>

Result on the web

<a href="http://DOI" target="_blank" >http://DOI</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d3nh00008g" target="_blank" >10.1039/d3nh00008g</a>

Result language

angličtina

Original language name

Coupling of plasmonic hot spots with shurikens for superchiral SERS-based enantiomer recognition

Original language description

Detection of enantiomers is a challenging problem in drug development as well as environmental and food quality monitoring where traditional optical detection methods suffer from low signals and sensitivity. Application of surface enhanced Raman scattering (SERS) for enantiomeric discrimination is a powerful approach for the analysis of optically active small organic or large biomolecules. In this work, we proposed the coupling of disposable chiral plasmonic shurikens supporting the chiral near-field distribution with SERS active silver nanoclusters for enantio-selective sensing. As a result of the plasmonic coupling, significant difference in SERS response of optically active analytes is observed. The observations are studied by numerical simulations and it is hypothesized that the silver particles are being excited by superchiral fields generated at the surface inducing additional polarizations in the probe molecules. The plasmon coupling phenomena was found to be extremely sensitive to slight variations in shuriken geometry, silver nanostructured layer parameters, and SERS excitation wavelength(s). Designed structures were able to discriminate cysteine enantiomers at concentrations in the nanomolar range and probe biomolecular chirality, using a common Raman spectrometer within several minutes. The combination of disposable plasmonic substrates with specific near-field polarization can make the SERS enantiomer discrimination a commonly available technique using standard Raman spectrometers. © 2023 The Royal Society of Chemistry.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20501 - Materials engineering

Project

<a href="/en/project/GA20-19353S" target="_blank" >GA20-19353S: Preparation and characterization of hybrid plasmonic nanostructures with strong chiral response</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Nanoscale Horizons

ISSN

2055-6756

e-ISSN

—

Volume of the periodical

8

Issue of the periodical within the volume

4

Country of publishing house

GB - UNITED KINGDOM

Number of pages

10

Pages from-to

499-508

UT code for WoS article

000929101000001

EID of the result in the Scopus database

2-s2.0-85148615664