Back to Search
Start Over
Switching a Nanocluster Core from Hollow to Nonhollow
- Source :
- Chemistry of Materials. 28:3292-3297
- Publication Year :
- 2016
- Publisher :
- American Chemical Society (ACS), 2016.
-
Abstract
- Modulating the structure–property relationship in atomically precise nanoclusters (NCs) is vital for developing novel NC materials and advancing their applications. While promising biphasic ligand-exchange (LE) strategies have been developed primarily to attain novel NCs, understanding the mechanistic aspects involved in tuning the core and the ligand-shell of NCs in such biphasic processes is challenging. Here, we design a single phase LE process that enabled us to elucidate the mechanism of how a hollow NC (e.g., [Ag44(SR)30]4–, SR: thiolate) converts into a nonhollow NC (e.g., [Ag25(SR)18]−) and vice versa. Our study reveals that the complete LE of the hollow [Ag44(SPhF)30]4– NCs (SPhF: 4-fluorobenzenethiolate) with incoming 2,4-dimethylbenzenethiol (HSPhMe2) induced distortions in the Ag44 structure forming the nonhollow [Ag25(SPhMe2)18]− by a disproportionation mechanism, while the reverse reaction of [Ag25(SPhMe2)18]− with HSPhF prompted an unusual dimerization of Ag25, followed by a rearrangement s...
- Subjects :
- Stereochemistry
Chemistry
General Chemical Engineering
Disproportionation
02 engineering and technology
General Chemistry
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Reversible reaction
0104 chemical sciences
Nanoclusters
Core (optical fiber)
Crystallography
Materials Chemistry
Single phase
0210 nano-technology
Subjects
Details
- ISSN :
- 15205002 and 08974756
- Volume :
- 28
- Database :
- OpenAIRE
- Journal :
- Chemistry of Materials
- Accession number :
- edsair.doi...........77330b511a8fc9dcd9576e4f69e49e94