[Ag25(SR)18]¯: The ‘Golden’ Silver Nanoparticle

Abstract
Silver nanoparticles with an atomically precise molecular formula [Ag25(SR)18]¯ (‒SR: thiolate) are synthesized and their single-crystal structure is determined. This synthesized nanocluster is the only silver nanoparticle that has a virtually identical analogue in gold, i.e., [Au25(SR)18]¯, in terms of number of metal atoms, ligand count, super-atom electronic configuration, and atomic arrangement. Furthermore, both [Ag25(SR)18]¯ and its gold analogue share a number of features in their optical absorption spectra. This unprecedented molecular synthesis in silver to mimic gold offers the first model nanoparticle platform to investigate the centuries-old problem of understanding the fundamental differences between silver and gold in terms of nobility, catalytic activity, and optical property.

Citation
[Ag25(SR)18]¯: The ‘Golden’ Silver Nanoparticle 2015:150831131334006 Journal of the American Chemical Society

Publisher
American Chemical Society (ACS)

Journal
Journal of the American Chemical Society

DOI
10.1021/jacs.5b07088

PubMed ID
26322865

Additional Links
http://pubs.acs.org/doi/10.1021/jacs.5b07088

Relations
Is Supplemented By:

Permanent link to this record