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Laser-Induced Chirality of Plasmonic Nanoparticles Embedded in Porous Matrix

Chiral plasmonic nanostructures have emerged as promising objects for numerous applications in nanophotonics, optoelectronics, biosensing, chemistry, and pharmacy. Here, we propose a novel method to induce strong chirality in achiral ensembles of gold nanoparticles via irradiation with circularly-po...

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Autores principales: Sapunova, Anastasiia A., Yandybaeva, Yulia I., Zakoldaev, Roman A., Afanasjeva, Alexandra V., Andreeva, Olga V., Gladskikh, Igor A., Vartanyan, Tigran A., Dadadzhanov, Daler R.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10222417/
https://www.ncbi.nlm.nih.gov/pubmed/37242050
http://dx.doi.org/10.3390/nano13101634
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author Sapunova, Anastasiia A.
Yandybaeva, Yulia I.
Zakoldaev, Roman A.
Afanasjeva, Alexandra V.
Andreeva, Olga V.
Gladskikh, Igor A.
Vartanyan, Tigran A.
Dadadzhanov, Daler R.
author_facet Sapunova, Anastasiia A.
Yandybaeva, Yulia I.
Zakoldaev, Roman A.
Afanasjeva, Alexandra V.
Andreeva, Olga V.
Gladskikh, Igor A.
Vartanyan, Tigran A.
Dadadzhanov, Daler R.
author_sort Sapunova, Anastasiia A.
collection PubMed
description Chiral plasmonic nanostructures have emerged as promising objects for numerous applications in nanophotonics, optoelectronics, biosensing, chemistry, and pharmacy. Here, we propose a novel method to induce strong chirality in achiral ensembles of gold nanoparticles via irradiation with circularly-polarized light of a picosecond Nd:YAG laser. Embedding of gold nanoparticles into a nanoporous silicate matrix leads to the formation of a racemic mixture of metal nanoparticles of different chirality that is enhanced by highly asymmetric dielectric environment of the nanoporous matrix. Then, illumination with intense circularly-polarized light selectively modifies the particles with the chirality defined by the handedness of the laser light, while their “enantiomers” survive the laser action almost unaffected. This novel modification of the spectral hole burning technique leads to the formation of an ensemble of plasmonic metal nanoparticles that demonstrates circular dichroism up to 100 mdeg. An unforeseen peculiarity of the chiral nanostructures obtained in this way is that 2D and 3D nanostructures contribute almost equally to the observed circular dichroism signals. Thus, the circular dichroism is neither even nor odd under reversal of direction of light propagation. These findings will help guide the development of a passive optical modulator and nanoplatform for enhanced chiral sensing and catalysis.
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spelling pubmed-102224172023-05-28 Laser-Induced Chirality of Plasmonic Nanoparticles Embedded in Porous Matrix Sapunova, Anastasiia A. Yandybaeva, Yulia I. Zakoldaev, Roman A. Afanasjeva, Alexandra V. Andreeva, Olga V. Gladskikh, Igor A. Vartanyan, Tigran A. Dadadzhanov, Daler R. Nanomaterials (Basel) Article Chiral plasmonic nanostructures have emerged as promising objects for numerous applications in nanophotonics, optoelectronics, biosensing, chemistry, and pharmacy. Here, we propose a novel method to induce strong chirality in achiral ensembles of gold nanoparticles via irradiation with circularly-polarized light of a picosecond Nd:YAG laser. Embedding of gold nanoparticles into a nanoporous silicate matrix leads to the formation of a racemic mixture of metal nanoparticles of different chirality that is enhanced by highly asymmetric dielectric environment of the nanoporous matrix. Then, illumination with intense circularly-polarized light selectively modifies the particles with the chirality defined by the handedness of the laser light, while their “enantiomers” survive the laser action almost unaffected. This novel modification of the spectral hole burning technique leads to the formation of an ensemble of plasmonic metal nanoparticles that demonstrates circular dichroism up to 100 mdeg. An unforeseen peculiarity of the chiral nanostructures obtained in this way is that 2D and 3D nanostructures contribute almost equally to the observed circular dichroism signals. Thus, the circular dichroism is neither even nor odd under reversal of direction of light propagation. These findings will help guide the development of a passive optical modulator and nanoplatform for enhanced chiral sensing and catalysis. MDPI 2023-05-13 /pmc/articles/PMC10222417/ /pubmed/37242050 http://dx.doi.org/10.3390/nano13101634 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Sapunova, Anastasiia A.
Yandybaeva, Yulia I.
Zakoldaev, Roman A.
Afanasjeva, Alexandra V.
Andreeva, Olga V.
Gladskikh, Igor A.
Vartanyan, Tigran A.
Dadadzhanov, Daler R.
Laser-Induced Chirality of Plasmonic Nanoparticles Embedded in Porous Matrix
title Laser-Induced Chirality of Plasmonic Nanoparticles Embedded in Porous Matrix
title_full Laser-Induced Chirality of Plasmonic Nanoparticles Embedded in Porous Matrix
title_fullStr Laser-Induced Chirality of Plasmonic Nanoparticles Embedded in Porous Matrix
title_full_unstemmed Laser-Induced Chirality of Plasmonic Nanoparticles Embedded in Porous Matrix
title_short Laser-Induced Chirality of Plasmonic Nanoparticles Embedded in Porous Matrix
title_sort laser-induced chirality of plasmonic nanoparticles embedded in porous matrix
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10222417/
https://www.ncbi.nlm.nih.gov/pubmed/37242050
http://dx.doi.org/10.3390/nano13101634
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