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Updated: Jul 23, 2025

High Resolution Phonon-assisted Quasi-resonance Fluorescence Spectroscopy
Published on: June 28, 2016
(Ro)vibrational Spectroscopic Constants, Lifetime and QTAIM Evaluation of Fullerene Dimers Stability
Rodrigo A Lemos Silva1,2, Mateus R Barbosa3, Caio R Martins2
1Instituto Federal de Educação, Ciência e Tecnologia de Goiás (IFG), Câmpus Jataí, Jataí 75804-714, GO, Brazil.
Fullerene dimers, or buckyballs, exhibit stable, long-lived interactions due to weak van der Waals forces. These findings enhance understanding of fullerene complex structural stability.
Area of Science:
- Physical Chemistry
- Computational Chemistry
- Materials Science
Background:
- Fullerenes possess unique properties due to their caged structure.
- Understanding inter-fullerene forces is crucial for their structural stability and applications.
Purpose of the Study:
- To investigate the attractive and repulsive forces between van der Waals fullerene complexes.
- To determine the structural stability and interaction nature of fullerene dimers.
- To calculate spectroscopic constants and lifetimes of fullerene complexes.
Main Methods:
- Density Functional Theory (DFT) at ωB97xD/6-31G(d) level.
- Discrete Variable Representation (DVR) and Dunham approaches for rovibrational analysis.
- Quantum Theory of Atoms in Molecules (QTAIM) and Reduced Density Gradient (RDG) analyses for interaction characterization.
Main Results:
- Potential energy curves revealed stable, long-lived fullerene dimers.
- Both DVR and Dunham methods accurately determined rovibrational structures.
- QTAIM and RDG analyses confirmed dominant weak van der Waals forces.
- Calculated lifetimes exceeded 1 picosecond, increasing with fullerene size.
Conclusions:
- Fullerene dimers are genuinely stable, long-lived complexes.
- Van der Waals forces are the primary interaction mechanism.
- Computational methods employed are reliable for studying fullerene complex dynamics and stability.
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