Tuning the energetics and tailoring the optical properties of silver clusters confined in zeolites

Accès libre Peer reviewed | |
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Version acceptée pour publication (post-print auteur) | |
Paternité - Pas d'utilisation commerciale [CC] [BY] [NC] | |
Auteurs |
Olivier James Fenwick Eduardo Coutiño-Gonzalez Didier Grandjean Wouter Baekelant Fanny Richard Sara Bonacchi Dirk De Vos Peter Lievens Maarten Roeffaers Johan Hofkens Paolo Samori |
Unité de recherche du site |
Institut de Science et d'Ingénierie Supramoléculaires - ISIS - UMR7006 |
Langue |
en |
Volume |
15 |
Numéro |
9 |
Page de début |
1017 |
Page de fin |
1022 |
Date de première publication |
2016-06-06 |
ISSN |
1476-1122 |
Titre de la source (revue, livre…) |
Nature Materials |
Résumé |
The integration of metal atoms and clusters in well-defined dielectric cavities is a powerful strategy to impart new properties to them that depend on the size and geometry of the confined space as well as on metal–host electrostatic interactions. Show moreThe integration of metal atoms and clusters in well-defined dielectric cavities is a powerful strategy to impart new properties to them that depend on the size and geometry of the confined space as well as on metal–host electrostatic interactions. Here, we unravel the dependence of the electronic properties of metal clusters on space confinement by studying the ionization potential of silver clusters embedded in four different zeolite environments over a range of silver concentrations. Extensive characterization reveals a strong influence of silver loading and host environment on the cluster ionization potential, which is also correlated to the cluster’s optical and structural properties. Through fine-tuning of the zeolite host environment, we demonstrate photoluminescence quantum yields approaching unity. This work extends our understanding of structure–property relationships of small metal clusters and applies this understanding to develop highly photoluminescent materials with potential applications in optoelectronics and bioimaging. Show less |
DOI | 10.1038/nmat4652 |
URL éditeur |
http://www.nature.com/nmat/journal/v15/n9/full/nmat4652.html#affil-auth |
Titre abrégé de la source |
Nat Mater |
Type de publication |
ACL |
Topic |
Chimie/Matériaux |
Mots-clés |
Electronic properties and materials |
Unité de recherche extérieure au site |
Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium |
Fonction |
aut |
Identifiant idREF |
109288335 |
Audience |
International |
URL | https://univoak.eu/islandora/object/islandora:51666 |