Multiple users have reported problems submitting materials to IDEALS. We are aware of the issue and are working to correct it ASAP. We appreciate your patience!

University of Illinois Urbana-Champaign

Towards unravelling the formation of ice grains: The phenanthrene-water complex

Loru, Donatella

Permalink

https://hdl.handle.net/2142/100640

Description

Title
Towards unravelling the formation of ice grains: The phenanthrene-water complex
Author(s)
Loru, Donatella
Contributor(s)
  • Schnell, Melanie
  • Perez, Cristobal
  • Steber, Amanda
  • Gruet, Sébastien
Issue Date
2018-06-19
Keyword(s)
Astronomy
Date of Ingest
  • 2018-08-17T16:09:24Z
  • 2018-12-12T22:35:28Z
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are believed to act as catalysts in ice grains formation. The formation of interstellar ice can thus be described as an aggregation process of gaseous water starting on PAH surfaces. The structural investigation of PAH-H2O clusters, therefore, represents a first and important step to undertake in order to shed light on potential ice grains formation pathways. Previous studies have focused on mimicking the initial stage of this aggregation process in laboratories by forming complexes between PAH and water molecules in the gas phase and investigating them by microwave spectroscopy. As the outcome of these studies, precise information on the structure and intermolecular interactions were obtained [1,2]. Herein we take this approach further and present preliminary data on the structural investigation of the complex of phenanthrene, a PAH molecule featuring three fused benzene rings, and water. Its pure rotational spectrum was recorded using a chirped pulse Fourier transform microwave spectrometer (CP-FTMW) operating in the region 2-8 GHz, and structural information on the respective water clusters can be obtained. [1] Perez, C.; Steber, A. L.; Rijs, A. M.; Temelso, B.; Shields, G. C.; Lopez, J. C.; Kisiel, Z.; Schnell, M., Phys. Chem. ´ Chem. Phys. 2017, 19, 14214-14223. [2] Steber, A. L.; Perez, C.; Temelso, B.; Shields, G. C.; Rijs, A. M.; Pate, B. H.; ´ Kisiel, Z.; Schnell, J. Phys. Chem. Lett. 2017, 8, 5744-5750.
Publisher
International Symposium on Molecular Spectroscopy
Type of Resource
text
Genre of Resource
Conference Paper / Presentation
Language
eng
Permalink
http://hdl.handle.net/2142/100640
DOI
10.15278/isms.2018.TL08
Copyright and License Information
Copyright 2018 Donatella Loru

Owning Collections

Abstracts & Presentations - 2018 International Symposium on Molecular Spectroscopy PRIMARY