Chiral Metafilms and Surface Enhanced Raman Scattering for Enantiomeric Discrimination of Helicoid Nanoparticles

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F23%3A43926151" target="_blank" >RIV/60461373:22310/23:43926151 - isvavai.cz</a>

Alternative codes found

RIV/60461373:22340/23:43926151

Result on the web

<a href="https://doi.org/10.1002/adom.202202991" target="_blank" >https://doi.org/10.1002/adom.202202991</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/adom.202202991" target="_blank" >10.1002/adom.202202991</a>

Result language

angličtina

Original language name

Chiral Metafilms and Surface Enhanced Raman Scattering for Enantiomeric Discrimination of Helicoid Nanoparticles

Original language description

Chiral nanophotonic platforms provide a means of creating near fields with both enhanced asymmetric properties and intensities. They can be exploited for optical measurements that allow enantiomeric discrimination at detection levels &gt; 6 orders of magnitude than is achieved with conventional chirally sensitive spectroscopic methods based on circularly polarized light. Here it is shown that surface enhanced Raman spectroscopy (SERS) is such a local probe of the near field environment. It is used to achieve enantiomeric discrimination of chiral helicoid nanoparticles deposited on left- and right-handed enantiomorphs of a chiral metafilm using an achiral molecule as a probe. “Hotter” electromagnetic (EM) hotspots are created for matched combinations of helicoid and metafilms (left-left and right-right), while mismatched combinations leads to significantly “cooler” electromagnetic hotspots. This large enantiomeric dependency on hotspot intensity is readily detected using SERS with the aid of an achiral Raman reporter molecule. In effect SERS is used to distinguish between the different EM environments of the plasmonic diastereomers produced by mixing chiral nanoparticles and metafilms. The work demonstrates that by combining chiral nanophotonic platforms with established SERS strategies new avenues in ultrasensitive chiral detection can be opened. © 2023 The Authors. Advanced Optical Materials published by Wiley-VCH GmbH.

Czech name

—

Czech description

—

Type

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

CEP classification

—

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

Advanced optical materials

ISSN

2195-1071

e-ISSN

—

Volume of the periodical

11

Issue of the periodical within the volume

9

Country of publishing house

DE - GERMANY

Number of pages

9

Pages from-to

"2202991/1"-9

UT code for WoS article

000950305300001

EID of the result in the Scopus database

2-s2.0-85150719529