Lucia-Tamudo, Jesus and Lopez-Sanchez, Ruben and Nogueira, Juan J. and Diaz-Tendero, Sergio (2024) Effect of weak intermolecular interactions on the ionization of benzene derivatives dimers. JOURNAL OF CHEMICAL PHYSICS, 161 (16): 164309. ISSN 0021-9606, 1089-7690
Full text not available from this repository. (Request a copy)Abstract
The interactions between pi-systems in dimers of aromatic molecules lead to particularly stable conformations within the relative orientations of the monomers. Extensive research has been conducted on the properties of these complexes in the neutral state. However, in recent decades, there has been a significant surge in applications harnessing these structures for electrical purposes. Therefore, this study places particular emphasis on a deeper understanding of the redox properties of these compounds and how to modify them. To achieve this, we have focused on modeling the effect of a wide range of functional groups on the redox properties of benzene derivatives, observing a correlation between these properties and the change in the molecular dipole moment. Then, we investigated the effect of pi-stacking interactions on these properties in dimers formed by either identical or different monomers. In both cases, there is an enhancement of the reducing character of the systems due to these interactions. Upon oxidation, the charge is distributed proportionally to the redox potential of each monomer. Therefore, if there is heterogeneity in these potentials, the properties of the complete cationic system will be influenced by the monomer with a greater tendency to undergo oxidation. The considered models serve as an excellent example for studying the behavior of nucleobases in DNA or aromatic amino acids, among others.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ZETA VALENCE QUALITY; DIRECTIVE INFLUENCE; REDUCTION POTENTIALS; MOLECULAR-GEOMETRY; NONCOVALENT INTERACTIONS; BASIS-SETS; DENSITY FUNCTIONALS; CATION SPECTROSCOPY; CIRCULAR-DICHROISM; ABSORPTION-SPECTRA; |
| Subjects: | 500 Science > 530 Physics 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Physikalische und Theoretische Chemie |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 13 Jan 2026 15:37 |
| Last Modified: | 13 Jan 2026 15:37 |
| URI: | https://pred.uni-regensburg.de/id/eprint/64883 |
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