High photoluminescence of shortwave infrared-emitting anisotropic surface charged gold nanoclusters

Benjamin Musnier; K. David Wegner; Clothilde Comby-Zerbino; Vanessa Trouillet; Muriel Jourdan; Ines Häusler; Rodolphe Antoine; Jean-Luc Coll; Ute Resch-Genger; Xavier Le Guével

doi:10.1039/C9NR04120F

High photoluminescence of shortwave infrared-emitting anisotropic surface charged gold nanoclusters†

Benjamin Musnier,‡^a K. David Wegner,‡^b Clothilde Comby-Zerbino,^c Vanessa Trouillet,^d Muriel Jourdan,^e Ines Häusler,^f Rodolphe Antoine,

^c Jean-Luc Coll,

*^a Ute Resch-Genger

*^b and Xavier Le Guével

*^a

Author affiliations

* Corresponding authors

^a Institute for Advanced Biosciences, University of Grenoble Alpes/INSERM1209/CNRS-UMR5309, Grenoble, France
E-mail: xavier.le-guevel@univ-grenoble-alpes, jean-luc.coll@univ-grenoble-alpes.fr

^b BAM Federal Institute for Materials Research and Testing, Richard-Willstaetter-Str. 11, 12489 Berlin, Germany
E-mail: ute.resch@bam.de

^c Institut lumière matière, UMR5306, Université Claude Bernard Lyon1-CNRS, Univ. Lyon 69622, Villeurbanne cedex, France

^d Institute for Applied Materials (IAM) and Karlsruhe Nano Micro Facility (KNMF), Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen, Germany

^e Université Grenoble Alpes, Département de Chimie Moléculaire (DCM)-CNRS UMR5250, Grenoble, France

^f Technische Universität Berlin, Institut für Optik und Atomare Physik, Straße des 17. Juni 135, 10623 Berlin, Germany

Abstract

Incorporating anisotropic surface charges on atomically precise gold nanoclusters (Au NCs) led to a strong absorption in the near-infrared region and could enable the formation of self-assembled Au NCs exhibiting an intense absorption band at ∼1000 nm. This surface modification showed a striking enhancement of the photoluminescence in the Shortwave Infrared (SWIR) region with a quantum yield as high as 6.1% in water.

This article is part of the themed collection: Editor’s Choice: Controlling anisotropy in nanomaterials

Nanoscale

High photoluminescence of shortwave infrared-emitting anisotropic surface charged gold nanoclusters†

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