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

FENWICK, Olivier James, COUTIÑO-GONZALEZ, Eduardo, GRANDJEAN, Didier, BAEKELANT, Wouter, RICHARD, Fanny, BONACCHI, Sara, DE VOS, Dirk, LIEVENS, Peter, ROEFFAERS, Maarten, HOFKENS, Johan et SAMORI, Paolo, sans date. Tuning the energetics and tailoring the optical properties of silver clusters confined in zeolites. Nature Materials [en ligne]. sans date. Vol. 15, n° 9pp. 1017-1022. [Consultésans date]. DOI 10.1038/nmat4652. Consulté de : http://www.nature.com/nmat/journal/v15/n9/full/nmat4652.html#affil-authThe 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.1. .
Accès libre Peer reviewed
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
URL éditeur http://www.nature.com/nmat/journal/v15/n9/full/nmat4652.html#affil-auth
Langue

en
Volume

15
Numéro

9
Page de début

1017
Page de fin

1022
Date de première publication

2016-06-06
ISSN

1476-1122
1476-4660
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
Titre abrégé de la source

Nat Mater
Type de publication

ACL
Domaine

Chimie/Matériaux
Mots-clés

Electronic properties and materials
Materials for optics
Nanoscale materials
Optics and photonics
Unité de recherche extérieure au site

Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
Laboratory of Solid State Physics and Magnetism, KU Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium
Department of Microbial and Molecular Systems, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
Fonction

aut
crp
Audience

International