Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/107580
Title: Polar curved polycyclic aromatic hydrocarbons in soot formation
Authors: Menon, Angiras
Martin, Jacob W.
Bowal, Kimberly
Slavchov, Radomir I.
Akroyd, Jethro
Mosbach, Sebastian
Kraft, Markus
Keywords: Curved Polycyclic Aromatic Hydrocarbons
Flexoelectric Dipole
Engineering::Chemical engineering
Issue Date: 2019
Source: Martin, J. W., Bowal, K., Menon, A., Slavchov, R. I., Akroyd, J., Mosbach, S., & Kraft, M. (2019). Polar curved polycyclic aromatic hydrocarbons in soot formation. Proceedings of the Combustion Institute, 37(1), 1117-1123. doi:10.1016/j.proci.2018.05.046
Journal: Proceedings of the Combustion Institute
Abstract: In this paper, we consider the impact of polar curved polycyclic aromatic hydrocarbons (cPAH) on the process of soot formation by employing electronic structure calculations to determine the earliest onset of curvature integration and the binding energy of curved homodimers. The earliest (smallest size) onset of curvature integration was found to be a six ring PAH with at least one pentagonal ring. The σ bonding in the presence of pentagons led to curvature, however, the π bonding strongly favored a planar geometry delaying the onset of curvature and therefore the induction of a flexoelectric dipole moment. The binding energies of cPAH dimers were found to be of similar magnitude to flat PAH containing one or two pentagons, with an alignment of the dipole moments vectors. For the more curved structures, steric effects reduced the dispersion interactions to significantly reduce the interaction energy compared with flat PAH. Homogeneous nucleation of cPAH at flame temperatures then appears unlikely, however, significant interactions are expected between chemi-ions and polar cPAH molecules suggesting heterogeneous nucleation should be explored.
URI: https://hdl.handle.net/10356/107580
http://hdl.handle.net/10220/50333
ISSN: 1540-7489
DOI: 10.1016/j.proci.2018.05.046
Schools: School of Chemical and Biomedical Engineering 
Rights: © 2019 Elsevier. All rights reserved. This paper was published in Proceedings of the Combustion Institute and is made available with permission of Elsevier.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SCBE Journal Articles

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