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Chemically-Controlled Ultrafast Photothermal Response in Plasmonic Nanostructured Assemblies
[Image: see text] Plasmonic nanoparticles are renowned as efficient heaters due to their capability to resonantly absorb and concentrate electromagnetic radiation, trigger excitation of highly energetic (hot) carriers, and locally convert their excess energy into heat via ultrafast nonradiative rela...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2022
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9014708/ https://www.ncbi.nlm.nih.gov/pubmed/35449522 http://dx.doi.org/10.1021/acs.jpcc.2c00364 |
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author | Schirato, Andrea Moretti, Luca Yang, Zhijie Mazzanti, Andrea Cerullo, Giulio Pileni, Marie-Paule Maiuri, Margherita Della Valle, Giuseppe |
author_facet | Schirato, Andrea Moretti, Luca Yang, Zhijie Mazzanti, Andrea Cerullo, Giulio Pileni, Marie-Paule Maiuri, Margherita Della Valle, Giuseppe |
author_sort | Schirato, Andrea |
collection | PubMed |
description | [Image: see text] Plasmonic nanoparticles are renowned as efficient heaters due to their capability to resonantly absorb and concentrate electromagnetic radiation, trigger excitation of highly energetic (hot) carriers, and locally convert their excess energy into heat via ultrafast nonradiative relaxation processes. Furthermore, in assembly configurations (i.e., suprastructures), collective effects can even enhance the heating performance. Here, we report on the dynamics of photothermal conversion and the related nonlinear optical response from water-soluble nanoeggs consisting of a Au nanocrystal assembly trapped in a water-soluble shell of ferrite nanocrystals (also called colloidosome) of ∼250–300 nm in size. This nanoegg configuration of the plasmonic assembly enables control of the size of the gold suprastructure core by changing the Au concentration in the chemical synthesis. Different metal concentrations are analyzed by means of ultrafast pump–probe spectroscopy and semiclassical modeling of photothermal dynamics from the onset of hot-carrier photogeneration (few picosecond time scale) to the heating of the matrix ligands in the suprastructure core (hundreds of nanoseconds). Results show the possibility to design and tailor the photothermal properties of the nanoeggs by acting on the core size and indicate superior performances (both in terms of peak temperatures and thermalization speed) compared to conventional (unstructured) nanoheaters of comparable size and chemical composition. |
format | Online Article Text |
id | pubmed-9014708 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-90147082022-04-19 Chemically-Controlled Ultrafast Photothermal Response in Plasmonic Nanostructured Assemblies Schirato, Andrea Moretti, Luca Yang, Zhijie Mazzanti, Andrea Cerullo, Giulio Pileni, Marie-Paule Maiuri, Margherita Della Valle, Giuseppe J Phys Chem C Nanomater Interfaces [Image: see text] Plasmonic nanoparticles are renowned as efficient heaters due to their capability to resonantly absorb and concentrate electromagnetic radiation, trigger excitation of highly energetic (hot) carriers, and locally convert their excess energy into heat via ultrafast nonradiative relaxation processes. Furthermore, in assembly configurations (i.e., suprastructures), collective effects can even enhance the heating performance. Here, we report on the dynamics of photothermal conversion and the related nonlinear optical response from water-soluble nanoeggs consisting of a Au nanocrystal assembly trapped in a water-soluble shell of ferrite nanocrystals (also called colloidosome) of ∼250–300 nm in size. This nanoegg configuration of the plasmonic assembly enables control of the size of the gold suprastructure core by changing the Au concentration in the chemical synthesis. Different metal concentrations are analyzed by means of ultrafast pump–probe spectroscopy and semiclassical modeling of photothermal dynamics from the onset of hot-carrier photogeneration (few picosecond time scale) to the heating of the matrix ligands in the suprastructure core (hundreds of nanoseconds). Results show the possibility to design and tailor the photothermal properties of the nanoeggs by acting on the core size and indicate superior performances (both in terms of peak temperatures and thermalization speed) compared to conventional (unstructured) nanoheaters of comparable size and chemical composition. American Chemical Society 2022-03-30 2022-04-14 /pmc/articles/PMC9014708/ /pubmed/35449522 http://dx.doi.org/10.1021/acs.jpcc.2c00364 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Schirato, Andrea Moretti, Luca Yang, Zhijie Mazzanti, Andrea Cerullo, Giulio Pileni, Marie-Paule Maiuri, Margherita Della Valle, Giuseppe Chemically-Controlled Ultrafast Photothermal Response in Plasmonic Nanostructured Assemblies |
title | Chemically-Controlled Ultrafast Photothermal Response
in Plasmonic Nanostructured Assemblies |
title_full | Chemically-Controlled Ultrafast Photothermal Response
in Plasmonic Nanostructured Assemblies |
title_fullStr | Chemically-Controlled Ultrafast Photothermal Response
in Plasmonic Nanostructured Assemblies |
title_full_unstemmed | Chemically-Controlled Ultrafast Photothermal Response
in Plasmonic Nanostructured Assemblies |
title_short | Chemically-Controlled Ultrafast Photothermal Response
in Plasmonic Nanostructured Assemblies |
title_sort | chemically-controlled ultrafast photothermal response
in plasmonic nanostructured assemblies |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9014708/ https://www.ncbi.nlm.nih.gov/pubmed/35449522 http://dx.doi.org/10.1021/acs.jpcc.2c00364 |
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