Single Au Atom Doping of Silver Nanoclusters

[Image: see text] Ag(29) nanoclusters capped with lipoic acid (LA) can be doped with Au. The doped clusters show enhanced stability and increased luminescence efficiency. We attribute the higher quantum yield to an increase in the rate of radiative decay. With mass spectrometry, the Au-doped cluster...

Descripción completa

Detalles Bibliográficos
Autores principales: van der Linden, Marte, van Bunningen, Arnoldus J., Amidani, Lucia, Bransen, Maarten, Elnaggar, Hebatalla, Glatzel, Pieter, Meijerink, Andries, de Groot, Frank M. F.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2018
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6328285/
https://www.ncbi.nlm.nih.gov/pubmed/30458110
http://dx.doi.org/10.1021/acsnano.8b07807
_version_ 1783386626775318528
author van der Linden, Marte
van Bunningen, Arnoldus J.
Amidani, Lucia
Bransen, Maarten
Elnaggar, Hebatalla
Glatzel, Pieter
Meijerink, Andries
de Groot, Frank M. F.
author_facet van der Linden, Marte
van Bunningen, Arnoldus J.
Amidani, Lucia
Bransen, Maarten
Elnaggar, Hebatalla
Glatzel, Pieter
Meijerink, Andries
de Groot, Frank M. F.
author_sort van der Linden, Marte
collection PubMed
description [Image: see text] Ag(29) nanoclusters capped with lipoic acid (LA) can be doped with Au. The doped clusters show enhanced stability and increased luminescence efficiency. We attribute the higher quantum yield to an increase in the rate of radiative decay. With mass spectrometry, the Au-doped clusters were found to consist predominantly of Au(1)Ag(28)(LA)(12)(3–). The clusters were characterized using X-ray absorption spectroscopy at the Au L(3)-edge. Both the extended absorption fine structure (EXAFS) and the near edge structure (XANES) in combination with electronic structure calculations confirm that the Au dopant is preferentially located in the center of the cluster. A useful XANES spectrum can be recorded for lower concentrations, or in shorter time, than the more commonly used EXAFS. This makes XANES a valuable tool for structural characterization.
format Online
Article
Text
id pubmed-6328285
institution National Center for Biotechnology Information
language English
publishDate 2018
publisher American Chemical Society
record_format MEDLINE/PubMed
spelling pubmed-63282852019-01-17 Single Au Atom Doping of Silver Nanoclusters van der Linden, Marte van Bunningen, Arnoldus J. Amidani, Lucia Bransen, Maarten Elnaggar, Hebatalla Glatzel, Pieter Meijerink, Andries de Groot, Frank M. F. ACS Nano [Image: see text] Ag(29) nanoclusters capped with lipoic acid (LA) can be doped with Au. The doped clusters show enhanced stability and increased luminescence efficiency. We attribute the higher quantum yield to an increase in the rate of radiative decay. With mass spectrometry, the Au-doped clusters were found to consist predominantly of Au(1)Ag(28)(LA)(12)(3–). The clusters were characterized using X-ray absorption spectroscopy at the Au L(3)-edge. Both the extended absorption fine structure (EXAFS) and the near edge structure (XANES) in combination with electronic structure calculations confirm that the Au dopant is preferentially located in the center of the cluster. A useful XANES spectrum can be recorded for lower concentrations, or in shorter time, than the more commonly used EXAFS. This makes XANES a valuable tool for structural characterization. American Chemical Society 2018-11-20 2018-12-26 /pmc/articles/PMC6328285/ /pubmed/30458110 http://dx.doi.org/10.1021/acsnano.8b07807 Text en Copyright © 2018 American Chemical Society This is an open access article published under a Creative Commons Non-Commercial No Derivative Works (CC-BY-NC-ND) Attribution License (http://pubs.acs.org/page/policy/authorchoice_ccbyncnd_termsofuse.html) , which permits copying and redistribution of the article, and creation of adaptations, all for non-commercial purposes.
spellingShingle van der Linden, Marte
van Bunningen, Arnoldus J.
Amidani, Lucia
Bransen, Maarten
Elnaggar, Hebatalla
Glatzel, Pieter
Meijerink, Andries
de Groot, Frank M. F.
Single Au Atom Doping of Silver Nanoclusters
title Single Au Atom Doping of Silver Nanoclusters
title_full Single Au Atom Doping of Silver Nanoclusters
title_fullStr Single Au Atom Doping of Silver Nanoclusters
title_full_unstemmed Single Au Atom Doping of Silver Nanoclusters
title_short Single Au Atom Doping of Silver Nanoclusters
title_sort single au atom doping of silver nanoclusters
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6328285/
https://www.ncbi.nlm.nih.gov/pubmed/30458110
http://dx.doi.org/10.1021/acsnano.8b07807
work_keys_str_mv AT vanderlindenmarte singleauatomdopingofsilvernanoclusters
AT vanbunningenarnoldusj singleauatomdopingofsilvernanoclusters
AT amidanilucia singleauatomdopingofsilvernanoclusters
AT bransenmaarten singleauatomdopingofsilvernanoclusters
AT elnaggarhebatalla singleauatomdopingofsilvernanoclusters
AT glatzelpieter singleauatomdopingofsilvernanoclusters
AT meijerinkandries singleauatomdopingofsilvernanoclusters
AT degrootfrankmf singleauatomdopingofsilvernanoclusters

Ejemplares similares