Geometric and electronic structures of medium-sized boron clusters doped with plutonium

Area of Science:

• Materials Science
• Computational Chemistry
• Nanotechnology

Background:

• Doping metal heteroatoms modifies boron-based nanoclusters' structure and properties.
• Determining ground-state structures of metal-boron nanoclusters is challenging due to complex bonding and numerous isomers.

Purpose of the Study:

• Investigate the geometries and electronic properties of anionic plutonium-boron nanoclusters (PuBn-, n=10-20).
• Identify stable structures and understand the factors contributing to their stability.

Main Methods:

• Employed the CALYPSO cluster structural search method.
• Utilized density functional theory (DFT) calculations for structural and electronic property analysis.

Main Results:

• The PuB14- cluster was identified as a highly stable medium-sized nanocluster.
• Achieved a significant highest occupied molecular orbital-lowest unoccupied molecular orbital (HOMO-LUMO) energy gap of 2.30 eV for PuB14-.
• Stability attributed to strong plutonium-boron interactions and robust boron-boron covalent bonds.

Conclusions:

• The study expands the structural database of metal-doped clusters.
• Provides valuable insights for the future synthesis of novel boron-based nanomaterials.
• Highlights the potential of plutonium doping for stabilizing boron nanoclusters.