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Updated: May 9, 2026
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Isolating Free Carbenes, their Mixed Dimers and Organic Radicals
Published on: April 19, 2019
Structure and properties of small aurocarbons: a selective study
C N Ramachandran1, Fedor Y Naumkin
1Faculty of Science, University of Ontario Institute of Technology, Oshawa, Ontario, Canada L1H7K4.
The Journal of Physical Chemistry. A
|July 30, 2013
Summary
Adding carbon to gold clusters tunes their electronic properties. Gold-encapsulated carbon structures show the most significant changes, impacting catalysis and material science applications.
Area of Science:
- Materials Science
- Computational Chemistry
- Catalysis
Background:
- Gold clusters are effective catalysts, with properties tunable by nonmetal doping.
- Altering cluster shape and composition offers a route to modify electronic characteristics.
Purpose of the Study:
- Investigate the structure, stability, and electronic properties of mixed carbon-gold clusters.
- Explore the relationship between shape, composition, and properties in these novel clusters.
- Examine the impact of doping and encapsulation on gold cluster behavior.
Main Methods:
- Utilized density functional theory (DFT) for theoretical calculations.
- Studied four series of isomers: hydrocarbon analogues, carbon on gold surfaces, and encapsulated carbon cores.
- Analyzed variations in relative stability, vertical ionization energies, electron affinities, and HOMO-LUMO gaps.
Main Results:
- Relative stability varied with system size and isomer type.
- Mixed clusters exhibited significant changes in electronic properties compared to pure gold clusters.
- Gold-encapsulated carbon isomers showed the most pronounced alterations in electronic properties.
- Aggregation of encapsulated carbon units led to further property modifications.
Conclusions:
- Carbon doping, particularly encapsulation, offers a powerful method to tune gold cluster properties.
- The findings provide insights into designing advanced catalysts and nanomaterials.
- DFT is a valuable tool for predicting the behavior of complex mixed-atom clusters.
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