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

Benjamin Musnier (1) , David Karl Wegner (2) , Clothilde Comby-Zerbino (3) , Vanessa Trouillet (4) , Muriel Jourdan (5) , Ines Häusler (6) , Rodolphe Antoine (3) , Jean-Luc Coll (1) , Ute Resch-Genger (2) , Xavier Le Guével (1)

1 IAB - Institute for Advanced Biosciences / Institut pour l'Avancée des Biosciences (Grenoble)
2 BAM Bundesanstalt für Materialforschung u. -prüfung
3 iLM - SPECTROBIO - iLM - Spectrométrie des biomolécules et agrégats
4 KIT - Karlsruhe Institute of Technology
5 DCM - I2BM - Département de Chimie Moléculaire - Ingéniérie et Intéractions BioMoléculaires
6 TU - Technical University of Berlin / Technische Universität Berlin

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.

Mots clés: gold nanoclusters; image-guided surgery; Head and Neck carcinoma; nanomedicine

Domaines: Optique / photonique; Matériaux; Chimie théorique et/ou physique

Benjamin Musnier, David Karl Wegner, Clothilde Comby-Zerbino, Vanessa Trouillet, Muriel Jourdan, et al.. High photoluminescence of shortwave infrared-emitting anisotropic surface charged gold nanoclusters. Nanoscale, 2019, 11 (25), pp.12092-12096. ⟨10.1039/c9nr04120f⟩. ⟨hal-02353153⟩