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Published on: June 18, 2013
Doped polycyclic aromatic hydrocarbons as building blocks for nanoelectronics: a theoretical study
Pavlo O Dral1, Milan Kivala, Timothy Clark
1Computer-Chemie-Centrum and Interdisciplinary Center for Molecular Materials, Department Chemie und Pharmazie, Friedrich-Alexander-Universität Erlangen-Nürnberg, Nägelsbachstrasse 25, 91052 Erlangen, Germany.
The Journal of Organic Chemistry
|October 24, 2012
Summary
Heteroatom substitution in polycyclic aromatic hydrocarbons alters their structure and electronic properties. These computational studies reveal impacts on strain, spectral characteristics, and overall aromaticity.
Area of Science:
- Computational chemistry
- Quantum chemistry
Background:
- Polycyclic aromatic hydrocarbons (PAHs) are crucial in various chemical and biological systems.
- Understanding how structural modifications affect PAH properties is essential for designing new materials and predicting environmental behavior.
Purpose of the Study:
- To investigate the influence of central heteroatom substitution on the properties of a model polycyclic aromatic hydrocarbon.
- To analyze the resulting changes in molecular structure, strain, electronic and spectral characteristics, and aromaticity.
Main Methods:
- Density Functional Theory (DFT) calculations.
- Semiempirical UHF Natural Orbital Configuration Interaction (UNO-CI) calculations.
Main Results:
- Heteroatom substitution significantly impacts the geometry and strain energy of the model PAH.
- Electronic and spectral properties, including UV-Vis absorption and emission, are modulated by the central heteroatom.
- Aromaticity indices show variations depending on the nature of the substituted heteroatom.
Conclusions:
- Central heteroatom substitution provides a tunable route to modify PAH properties.
- The findings offer insights into the design of novel functional aromatic systems.
