Journal
SCIENCE CHINA-CHEMISTRY
Volume 64, Issue 6, Pages 948-952Publisher
SCIENCE PRESS
DOI: 10.1007/s11426-020-9952-x
Keywords
silver nanocluster; electrically neutral thiolate; reversible transformation
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Funding
- National Natural Science Foundation of China [21871196, 21773163, 21531006]
- State Key Laboratory of Organometallic Chemistry of Shanghai Institute of Organic Chemistry [KF2021005]
- Collaborative Innovation Center of Suzhou Nano Science and Technology
- Priority Academic Program Development of Jiangsu Higher Education Institutions
- Project of Scientific and Technologic Infrastructure of Suzhou [SZS201905]
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Two atom-precise silver nanoclusters, Ag-25 and Ag-26, were synthesized using the thiolate protective ligand Tab. The weak Ag-S interaction in Tab-protected clusters allows for reversible conversion through solvent-triggered core fragmentation and re-arrangement.
Two atom-precise silver nanoclusters [Ag25Cl2(Tab)(14)(PhCOO)(11)(DMF)(4)](PF6)(12) (Ag-25, DMF=N,N-dimethylformamide) and [Ag26Cl2(Tab)(14)(PhCOO)(13)(DMAc)(4)](PF6)(11)(Ag-26, DMAc=N,N-dimethylacetamide) were synthesized based on the electrically neutral thiolate protective ligand, 4-(trimethylammonio)benzenethiolate (Tab). The weak Ag-S interaction in Tab-protected silver nanoclusters allows to insert or leave a single silver atom in the Ag-S skeleton through solvent-trigger core fragmentation and re-arrangement, thereby realizing the reversible conversion of Ag-25 and Ag-26 for the first time.
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