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Dr Courtney Ennis

courtney_resizedPhD, BSc(Hons) (UWA)

Tel +64 3 479 5288
Location Science II, 5n1
Email courtney.ennis@otago.ac.nz

Research interests

The Ennis group is interested in the application of laboratory infrared spectroscopy (including cryogenic thin-film FTIR, matrix isolation, synchrotron far-IR and THz, and aerosol scattering techniques), to characterise crystalline solids.

These investigations are often performed in the context of solid-state astrochemistry, molecular crystals, and supramolecular gas sorption studies where information on UV photochemistry, crystal morphology, and intermolecular interactions within the bulk material to be gathered.

These infrared techniques are coupled with periodic DFT frequency calculations for characterisation of many physicochemical properties of the crystal-phase.

For more detailed information about the Ennis Group research projects and laboratory capabilities please visit our UO Blog:
Courtney Ennis University of Otago blog

Professional background

2018 – present, Lecturer, University of Otago
2015 – 2018, ARC DECRA Research Fellow, La Trobe University, Australia
2014 – 2015, Postdoctoral Fellow, Australian Synchrotron/La Trobe University, Australia
2012 – 2013, Postdoctoral Fellow, University College London, United Kingdom
2009 – 2011, Postdoctoral Fellow, University of Hawai’i at Manoa, USA
2005 – 2009, PhD (Physical Chemistry), University of Western Australia, Australia

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Publications

Ennis, C., Cable, M. L., Hodyss, R., & Maynard-Casely, H. E. (2020). Mixed hydrocarbon and cyanide ice compositions for Titan's atmospheric aerosols: A ternary-phase co-crystal predicted by density functional theory. ACS Earth & Space Chemistry. Advance online publication.

Graf, W. F., Pearson, J. R., Appadoo, D. R. T., Robertson, E. G., & Ennis, C. (2020). Synchrotron far-infrared spectra for the characterisation of molecular crystals of forensic interest: Amphetamine, methamphetamine, MDA, MDMA and substituted methcathinones. Vibrational Spectroscopy. Advance online publication. doi: 10.1016/j.vibspec.2020.103115

Graf, W. F., Pearson, J. R., Appadoo, D. R. T., Robertson, E. G., & Ennis, C. (2020). The prediction of far-infrared spectra for molecular crystals of forensic interest: Phenylethylamine, ephedrine & pseudoephedrine. Forensic Chemistry, 17, 100204. doi: 10.1016/j.forc.2019.100204

Brand, H. E. A., Gu, Q., Kimpton, J. A., Auchettl, R., & Ennis, C. (2020). Crystal structure of propionitrile (CH3CH2CN) determined using synchrotron powder X-ray diffraction. Journal of Synchrotron Radiation, 27, 212-216. doi: 10.1107/S1600577519015911

Ruzi, M., Auchettl, R., Ennis, C., Appadoo, D. R. T., & Robertson, E. G. (2018). Terahertz and mid-infrared spectra of cold formic acid aerosol particles. ACS Earth & Space Chemistry, 2, 1011-1021. doi: 10.1021/acsearthspacechem.8b00085

Journal - Research Article

Ennis, C., Cable, M. L., Hodyss, R., & Maynard-Casely, H. E. (2020). Mixed hydrocarbon and cyanide ice compositions for Titan's atmospheric aerosols: A ternary-phase co-crystal predicted by density functional theory. ACS Earth & Space Chemistry. Advance online publication.

Graf, W. F., Pearson, J. R., Appadoo, D. R. T., Robertson, E. G., & Ennis, C. (2020). The prediction of far-infrared spectra for molecular crystals of forensic interest: Phenylethylamine, ephedrine & pseudoephedrine. Forensic Chemistry, 17, 100204. doi: 10.1016/j.forc.2019.100204

Graf, W. F., Pearson, J. R., Appadoo, D. R. T., Robertson, E. G., & Ennis, C. (2020). Synchrotron far-infrared spectra for the characterisation of molecular crystals of forensic interest: Amphetamine, methamphetamine, MDA, MDMA and substituted methcathinones. Vibrational Spectroscopy. Advance online publication. doi: 10.1016/j.vibspec.2020.103115

Ruzi, M., Auchettl, R., Ennis, C., Appadoo, D. R. T., & Robertson, E. G. (2018). Terahertz and mid-infrared spectra of cold formic acid aerosol particles. ACS Earth & Space Chemistry, 2, 1011-1021. doi: 10.1021/acsearthspacechem.8b00085

Ennis, C., Auchettl, R., Appadoo, D. R. T., & Robertson, E. G. (2018). The prediction of far-infrared spectra for planetary nitrile ices using periodic density functional theory with comparison to thin film experiments. Physical Chemistry Chemical Physics, 20(36), 23593-23605. doi: 10.1039/c8cp04219e

Auchettl, R., Ruzi, M., Appadoo, D. R. T., Robertson, E. G., & Ennis, C. (2018). Binary-phase acetonitrile and water aerosols: Infrared studies and theoretical simulation at titan atmosphere conditions. ACS Earth & Space Chemistry, 2(8), 811-820. doi: 10.1021/acsearthspacechem.8b00059

Ennis, C., Auchettl, R., Appadoo, D. R. T., & Robertson, E. G. (2017). Density functional theory for prediction of far-infrared vibrational frequencies: Molecular crystals of astrophysical interest. Monthly Notices of the Royal Astronomical Society, 471(4), 4265-4274. doi: 10.1093/MNRAS/STX1736

Ruzi, M., Ennis, C., & Robertson, E. G. (2017). Spectral curve fitting of dielectric constants. AIP Advances, 7(1), 015042. doi: 10.1063/1.4975398

Ennis, C., Auchettl, R., Ruzi, M., & Robertson, E. G. (2017). Infrared characterisation of acetonitrile and propionitrile aerosols under Titan's atmospheric conditions. Physical Chemistry Chemical Physics, 19(4), 2915-2925. doi: 10.1039/c6cp08110j

Bennett, C. J., Ennis, C. P., & Kaiser, R. I. (2014). Experimental studies on the formation of D2O and D2O2 by implantation of energetic D+ions into oxygen ices. Astrophysical Journal, 782(2), 63. doi: 10.1088/0004-637X/782/2/63

Bennett, C. J., Ennis, C. P., & Kaiser, R. I. (2014). Implantation of energetic D+ions into carbon dioxide ices and implications for our solar system: Formation of D2O and D2CO3. Astrophysical Journal, 794(1), 57. doi: 10.1088/0004-637X/794/1/57

Kim, Y. S., Ennis, C., & Kim, S. J. (2013). Simulating the 3.4-micron feature of titan's haze. Bulletin of the Korean Chemical Society, 34(3), 759-762. doi: 10.5012/bkcs.2013.34.3.759

Ennis, C., & Kaiser, R. I. (2012). On the formation of ozone in solar system oxygen ices exposed to heavy ions. Astrophysical Journal, 745(2), 103. doi: 10.1088/0004-637X/745/2/103

Ennis, C., Bennett, C. J., Jones, B. M., & Kaiser, R. I. (2011). Formation of D2-water and D2-carbonic acid in oxygen-rich solar system ices via D+2 irradiation. Astrophysical Journal, 733(2), 79. doi: 10.1088/0004-637X/733/2/79

Ennis, C. P., Bennett, C. J., & Kaiser, R. I. (2011). On the formation of ozone in oxygen-rich solar system ices via ionizing radiation. Physical Chemistry Chemical Physics, 13(20), 9469-9482. doi: 10.1039/c1cp20434c

Ennis, C., Yuan, H., Sibener, S. J., & Kaiser, R. I. (2011). On the chemical processing of hydrocarbon surfaces by fast oxygen ions. Physical Chemistry Chemical Physics, 13(39), 17870-17884. doi: 10.1039/c1cp21800j

Ennis, C. P., & Kaiser, R. I. (2010). Mechanistical studies on the electron-induced degradation of polymers: Polyethylene, polytetrafluoroethylene, and polystyrene. Physical Chemistry Chemical Physics, 12(45), 14884-14901. doi: 10.1039/c0cp00493f

Ennis, C. P., & Kaiser, R. I. (2010). Mechanistical studies on the electron-induced degradation of polymethylmethacrylate and Kapton. Physical Chemistry Chemical Physics, 12(45), 14902-14915. doi: 10.1039/c0cp01130d

Quickenden, T. I., Ennis, C. P., & Creamer, J. I. (2004). The forensic use of luminol chemiluminescence to detect traces of blood inside motor vehicles. Luminescence, 19(5), 271-277. doi: 10.1002/bio.780

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Journal - Research Other

Brand, H. E. A., Gu, Q., Kimpton, J. A., Auchettl, R., & Ennis, C. (2020). Crystal structure of propionitrile (CH3CH2CN) determined using synchrotron powder X-ray diffraction. Journal of Synchrotron Radiation, 27, 212-216. doi: 10.1107/S1600577519015911

Ennis, C., Lane, J. R., Kjaergaard, H. G., & McKinley, A. J. (2009). Identification of the water amidogen radical complex [Communication]. Journal of the American Chemical Society, 131(4), 1358-1359. doi: 10.1021/ja808109m

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Conference Contribution - Published proceedings: Full paper

Kimber, H. J., Ennis, C. P., & Price, S. D. (2014). Single and double addition of oxygen atoms to propyne on surfaces at low temperatures. Faraday Discussions, 168, (pp. 167-184). doi: 10.1039/c3fd00130j

Plathe, R., Appadoo, D., & Ennis, C. (2014). New laser applications on the THz/FarIR beamline at the Australian synchrotron. Proceedings of the 39th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz). IEEE. doi: 10.1109/IRMMW-THz.2014.6956415

Kaiser, R. I., Maksyutenko, P., Ennis, C., Zhang, F., Gu, X., Krishtal, S. P., … Ahmed, M. (2010). Untangling the chemical evolution of Titan's atmosphere and surface: From homogeneous to heterogeneous chemistry. Faraday Discussions, 147, (pp. 429-478). doi: 10.1039/c003599h

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