Control of single-ligand chemistry on thiolated Au25 nanoclusters
Journal Article
·
· Nature Communications
- National Univ. of Singapore (Singapore)
- Univ. of California, Riverside, CA (United States)
- Zhengzhou University (China)
- National Univ. of Singapore (Singapore); Joint School of National University of Singapore and Tianjin University (China)
Diverse methods have been developed to tailor the number of metal atoms in metal nanoclusters, but control of surface ligand number at a given cluster size is rare. Here we demonstrate that reversible addition and elimination of a single surface thiolate ligand (-SR) on gold nanoclusters can be realized, opening the door to precision ligand engineering on atomically precise nanoclusters. We find that oxidative etching of [Au25SR18]– nanoclusters adds an excess thiolate ligand and generates a new species, [Au25SR19]0. The addition reaction can be reversed by CO reduction of [Au25SR19]0, leading back to [Au25SR18]– and eliminating precisely one surface ligand. Intriguingly, we show that the ligand shell of Au25 nanoclusters becomes more fragile and rigid after ligand addition. This reversible addition/elimination reaction of a single surface ligand on gold nanoclusters shows potential to precisely control the number of surface ligands and to explore new ligand space at each nuclearity.
- Research Organization:
- Univ. of California, Riverside, CA (United States)
- Sponsoring Organization:
- Ministry of Education, Singapore; USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division
- OSTI ID:
- 1817097
- Journal Information:
- Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 11; ISSN 2041-1723
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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