articleJournal of the American Chemical SocietyAug 31, 2015Closed access

[Ag 25 (SR) 18 ] − : The “Golden” Silver Nanoparticle

CPChakra P. JoshiMSMegalamane S. BootharajuMJMohammad J. AlhilalyOMOsman M. Bakr

King Abdullah University of Science and Technology

PubMed
Indexed incrossrefpubmed

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, superatom 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 analogue in silver to mimic gold offers the first model nanoparticle platform to investigate the centuries-old problem of understanding the fundamental differences…

Citation impact

603
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21.06
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100%
References
37
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Authors

4

Topics & keywords

Topics
Keywords
  • Chemistry
  • Superatom
  • Silver nanoparticle
  • Nanoparticle
  • Colloidal gold
  • Metal
  • Nanoclusters
  • Nanotechnology
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