Thiolate-protected golden fullerenes. A 32-ve core involving a hollow Au-32 cage

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http://hdl.handle.net/10138/224414

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Rauhalahti , M , Munoz-Castro , A & Sundholm , D 2016 , ' Thiolate-protected golden fullerenes. A 32-ve core involving a hollow Au-32 cage ' , RSC Advances , vol. 6 , no. 26 , pp. 21332-21336 . https://doi.org/10.1039/c5ra27683g

Title: Thiolate-protected golden fullerenes. A 32-ve core involving a hollow Au-32 cage
Author: Rauhalahti, M.; Munoz-Castro, A.; Sundholm, D.
Contributor: University of Helsinki, Department of Chemistry
University of Helsinki, Department of Chemistry
Date: 2016
Language: eng
Number of pages: 5
Belongs to series: RSC Advances
ISSN: 2046-2069
URI: http://hdl.handle.net/10138/224414
Abstract: We have computationally investigated the possible formation of large hollow gold nanostructures based on a Au-32 core covered with a thiolate layer using relativistic density functional theory calculations. We have found that [Au-32@Au-12(SR)(18)](6-) is a plausible candidate that retains the structural, electronic and spherical aromatic properties of the Au-32 cage of its parent bare Au-32 golden fullerene. The study shows that the low-energy part of the optical spectrum can serve as a guide to identify such hollow gold structures among other small-sized gold nanoclusters with similar nuclearities. The low-lying excited states are dominated by 1f -> 1g transitions, which significantly distinguish hollow clusters from other nanoclusters, like the prominent [Au-25(SR)(18)](-) cluster, whose low-lying excitations are dominated by 1p /1d transitions. The gold nanoclusters studied here can serve as model compounds for assessing the metallic core size effects on the absorption energies and the influence of the surface structure of the gold core on the cluster properties. The present study suggests that it is also plausible that even larger hollow structures derived from Au-42, Au-72, and Au-92 golden fullerenes can exist.
Subject: ELECTRONIC-STRUCTURE
OPTICAL-PROPERTIES
NANOPARTICLES
CLUSTERS
NANOCLUSTERS
SUPERATOMS
STABILITY
SIZE
AU-144(SR)(60)
MOLECULES
116 Chemical sciences
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