Cargando…
Temperature-Sensitive Localized Surface Plasmon Resonance of α-NiS Nanoparticles
[Image: see text] The presented work shows a synthesis route to obtain nanoparticles of the hexagonal α-NiS phase and core–shell particles where the same material is grown onto previously prepared Au seeds. In the bulk, this nickel sulfide phase is known to exhibit a metal–insulator type phase trans...
Autores principales: | , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2021
|
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8667038/ https://www.ncbi.nlm.nih.gov/pubmed/34917227 http://dx.doi.org/10.1021/acs.jpcc.1c08412 |
_version_ | 1784614319888007168 |
---|---|
author | Himstedt, Rasmus Baabe, Dirk Wesemann, Christoph Bessel, Patrick Hinrichs, Dominik Schlosser, Anja Bigall, Nadja C. Dorfs, Dirk |
author_facet | Himstedt, Rasmus Baabe, Dirk Wesemann, Christoph Bessel, Patrick Hinrichs, Dominik Schlosser, Anja Bigall, Nadja C. Dorfs, Dirk |
author_sort | Himstedt, Rasmus |
collection | PubMed |
description | [Image: see text] The presented work shows a synthesis route to obtain nanoparticles of the hexagonal α-NiS phase and core–shell particles where the same material is grown onto previously prepared Au seeds. In the bulk, this nickel sulfide phase is known to exhibit a metal–insulator type phase transition (MIT) at 265 K which drastically alters its electrical conductivity. Since the produced nanoparticles show a localized surface plasmon resonance (LSPR) in the visible range of the electromagnetic spectrum, the development of their optical properties depending on the temperature is investigated. This is the first time an LSPR of colloidal nanoparticles is monitored regarding such a transition. The results of UV–vis absorbance measurements show that the LSPR of the particles can be strongly and reversibly tuned by varying the temperature. It can be switched off by cooling the nanoparticles and switched on again by reheating them above the transition temperature. Additional to the phase transition, the temperature-dependent magnetic susceptibility of α-NiS and Au-NiS nanoparticles suggests the presence of different amounts of uncompensated magnetic moments in these compounds that possibly affect the optical properties and may cause the observed quantitative differences in the LSPR response of these materials. |
format | Online Article Text |
id | pubmed-8667038 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-86670382021-12-14 Temperature-Sensitive Localized Surface Plasmon Resonance of α-NiS Nanoparticles Himstedt, Rasmus Baabe, Dirk Wesemann, Christoph Bessel, Patrick Hinrichs, Dominik Schlosser, Anja Bigall, Nadja C. Dorfs, Dirk J Phys Chem C Nanomater Interfaces [Image: see text] The presented work shows a synthesis route to obtain nanoparticles of the hexagonal α-NiS phase and core–shell particles where the same material is grown onto previously prepared Au seeds. In the bulk, this nickel sulfide phase is known to exhibit a metal–insulator type phase transition (MIT) at 265 K which drastically alters its electrical conductivity. Since the produced nanoparticles show a localized surface plasmon resonance (LSPR) in the visible range of the electromagnetic spectrum, the development of their optical properties depending on the temperature is investigated. This is the first time an LSPR of colloidal nanoparticles is monitored regarding such a transition. The results of UV–vis absorbance measurements show that the LSPR of the particles can be strongly and reversibly tuned by varying the temperature. It can be switched off by cooling the nanoparticles and switched on again by reheating them above the transition temperature. Additional to the phase transition, the temperature-dependent magnetic susceptibility of α-NiS and Au-NiS nanoparticles suggests the presence of different amounts of uncompensated magnetic moments in these compounds that possibly affect the optical properties and may cause the observed quantitative differences in the LSPR response of these materials. American Chemical Society 2021-11-23 2021-12-09 /pmc/articles/PMC8667038/ /pubmed/34917227 http://dx.doi.org/10.1021/acs.jpcc.1c08412 Text en © 2021 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Himstedt, Rasmus Baabe, Dirk Wesemann, Christoph Bessel, Patrick Hinrichs, Dominik Schlosser, Anja Bigall, Nadja C. Dorfs, Dirk Temperature-Sensitive Localized Surface Plasmon Resonance of α-NiS Nanoparticles |
title | Temperature-Sensitive Localized Surface Plasmon Resonance
of α-NiS Nanoparticles |
title_full | Temperature-Sensitive Localized Surface Plasmon Resonance
of α-NiS Nanoparticles |
title_fullStr | Temperature-Sensitive Localized Surface Plasmon Resonance
of α-NiS Nanoparticles |
title_full_unstemmed | Temperature-Sensitive Localized Surface Plasmon Resonance
of α-NiS Nanoparticles |
title_short | Temperature-Sensitive Localized Surface Plasmon Resonance
of α-NiS Nanoparticles |
title_sort | temperature-sensitive localized surface plasmon resonance
of α-nis nanoparticles |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8667038/ https://www.ncbi.nlm.nih.gov/pubmed/34917227 http://dx.doi.org/10.1021/acs.jpcc.1c08412 |
work_keys_str_mv | AT himstedtrasmus temperaturesensitivelocalizedsurfaceplasmonresonanceofanisnanoparticles AT baabedirk temperaturesensitivelocalizedsurfaceplasmonresonanceofanisnanoparticles AT wesemannchristoph temperaturesensitivelocalizedsurfaceplasmonresonanceofanisnanoparticles AT besselpatrick temperaturesensitivelocalizedsurfaceplasmonresonanceofanisnanoparticles AT hinrichsdominik temperaturesensitivelocalizedsurfaceplasmonresonanceofanisnanoparticles AT schlosseranja temperaturesensitivelocalizedsurfaceplasmonresonanceofanisnanoparticles AT bigallnadjac temperaturesensitivelocalizedsurfaceplasmonresonanceofanisnanoparticles AT dorfsdirk temperaturesensitivelocalizedsurfaceplasmonresonanceofanisnanoparticles |