Symmetry breaking in ligand-protected gold clusters probed by nonlinear optics

6533b824fe1ef96bd12816c4

RESEARCH PRODUCT

Symmetry breaking in ligand-protected gold clusters probed by nonlinear optics

Amala Dass Chanaka Kumara Hannu Häkkinen Koen Clays Steven Deckers Thierry Verbiest Nick Van Steerteghem Stijn Van Cleuvenbergen Stefan Knoppe

subject

ta114 Condensed matter physics ligands Chemistry Scattering Ligand nonlinear optics Nonlinear optics 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology gold clusters 01 natural sciences Molecular physics 0104 chemical sciences molecular symmetry Molecular symmetry Cluster (physics)General Materials Science Symmetry breaking 0210 nano-technology ta116

description

The first hyperpolarizabilities of [Au25(SR)18](-1/0) and Au38(SR)24 clusters were determined by Hyper-Rayleigh Scattering. A strong dependence on the molecular symmetry was observed, and we explore two strategies to destroy the center of inversion in [Au25(SR)18](-1/0), protection by chiral ligands and alloying of the cluster with silver. This may open new avenues to applications of Au : SR clusters in second-order nonlinear optics.

year	journal	country	edition	language
2016-06-07	Nanoscale

https://doi.org/10.1039/c6nr02251k

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