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Published on: August 15, 2019
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Gold-Doping of Double-Crown Pd Nanoclusters
Jishi Chen1,2, Liren Liu3, Xu Liu1,2
1Key Laboratory of Materials Physics, Anhui Key Laboratory of Nanomaterials and Nanostructures, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei, Anhui, 230031, China.
Chemistry (Weinheim an Der Bergstrasse, Germany)
|October 17, 2017
Summary
Gold doping of palladium nanoclusters creates the smallest chiral bimetal nanocluster. This research explores new doping methods and chirality origins in metal nanoclusters.
Area of Science:
- Materials Science
- Nanotechnology
- Inorganic Chemistry
Background:
- Double-crown nanoclusters of Nickel (Ni), Palladium (Pd), or Platinum (Pt) are of significant interest due to their unique structures and properties.
- The doping of these nanoclusters with other metals has not been previously explored.
Purpose of the Study:
- To investigate the successful doping of Palladium nanoclusters with Gold (Au).
- To characterize the structural and electronic changes induced by gold doping.
- To explore novel origins of chirality in bimetal nanoclusters.
Main Methods:
- Synthesis of gold-doped Palladium nanoclusters: Pd4(PET)8 and Pd5(PET)10.
- Characterization using mass spectrometry and X-ray crystallography.
- Analysis of optical properties, including visible absorption and optical energy gap.
Main Results:
- Gold doping involves the substitution of two Pd atoms by one Au atom, preserving the double-crown structure.
- Gold doping causes a blue-shift in visible absorption, increases the optical energy gap, and reduces anti-aromaticity.
- The Au4Pd2(PET)8 nanocluster exhibits chirality from both its framework and the configuration of sulfur atoms, representing the smallest chiral bimetal nanocluster to date.
Conclusions:
- This study demonstrates successful gold doping of palladium nanoclusters, leading to significant property modifications.
- A novel origin of chirality in metal nanoclusters, related to sulfur atom configuration, has been identified.
- The findings contribute to the tailored synthesis of group 10 metal nanoclusters and the understanding of chirality in nanomaterials.
