D. James Donaldson
Academic Title: Professor & Associate Chair Graduate Studies
Phone: 416-978-3603 / 416-287-7213
Office: LM 316
Research Homepage: http://www.chem.utoronto.ca/staff/DJD/
Research in my laboratory brings techniques of physical chemistry to understand fundamental aspects of atmospheric and environmental chemistry. We use laser-induced fluorescence and Raman spectroscopies, non-linear laser spectroscopy, mass spectrometry, attenuated total reflectance FTIR and quantum chemical methods, combined with standard analytical methods (available in ANALEST) to probe and understand chemical interactions of atmospheric importance. These include: the kinetics and mechanisms of reactions taking place at aerosol, water and ice surfaces and in "urban surface films"; heterogeneous photochemistry on a variety of atmospheric surfaces; and novel chemistry induced by vibrational excitation. The Research Group pages give details on all the ongoing projects.
My research group is made up of graduate students, postdoctoral scientists and undergraduates. We enjoy strong interactions with other members of the Environmental Chemistry group, especially with Professors Abbatt and Murphy, as well as other environmental scientists at U of T and Environment Canada. Ongoing collaborations with scientists at CNRS in Lyon, PSI outside Zurich and CIRES in Boulder provide exciting opportunities for exchange visits to these laboratories.
Some representative recent publications include
Atmospheric surface chemistry
E. A. Henderson and D.J. Donaldson, "The Influence of Organic Coatings on Pyrene Ozonolysis at the Air-Aqueous Interface", J. Phys. Chem. A, 116, 423-429 (2012)
S. A. Styler and D.J. Donaldson, "Photooxidation of Atmospheric Alcohols on Laboratory Proxies for Mineral Dust", Environ. Sci. Technol. 45, 10004-10012 (2011).
S.N. Wren and D.J. Donaldson, "The exclusion of nitrate to the air-ice interface during freezing" J. Phys. Chem. Lett., 2, 1967-1971 (2011).
T.F. Kahan, N.-O. A. Kwamena and D.J. Donaldson, "Different photolysis kinetics at the surface of frozen freshwater vs. frozen salt solutions", Atmos. Chem. Phys., 10, 10917-10922 (2010).
S. N. Wren, T. F. Kahan, K. B. Jumaa and D. J. Donaldson, "Spectroscopic studies of the heterogeneous reaction between O3(g) and halides at the surface of frozen salt solutions", J. Geophys. Res. 115 Article Number: D16309 (2010).
D. I. Reeser, A. Jammoul, D. Clifford, M. Brigante, B. D’Anna, C. George and D.J. Donaldson, "Photoenhanced reaction of ozone with chlorophyll at the sea-water surface" J. Phys. Chem. C. 113, 2071-2077 (2009).
Atmospheric vibrational photochemistry
D.J. Donaldson, C. George and V. Vaida, "Red sky at night: Long-wavelength photochemistry in the atmosphere", Environ. Sci. Technol. 44, 5321-5326 (2010).
C.J. Young and D.J. Donaldson, "Overtone-induced degradation of perfluorinated alcohols in the atmosphere", J. Phys. Chem. A, 111, 13466-13471 (2007).
D.J. Donaldson and J.S. Francisco, "Bimolecular Reaction of Molecular Oxygen with Overtone Excited HOOH: Implications for Recycling HO2 in the Atmosphere", Phys. Chem. Chem. Phys. 5, 3183 - 3187 (2003).
Theoretical approaches to atmospheric chemistry
Diego Ardura, Tara F. Kahan and D.J. Donaldson, "Self-association of naphthalene at the air-ice interface" J. Phys. Chem. A 113 7353-7359 (2009).
Diego Ardura and D.J. Donaldson, "Where does acid hydrolysis take place?" Phys. Chem. Chem. Phys. 11, 857-863 (2009).
M. Staikova, F. Wania, D. J. Donaldson, "Molecular polarizability as a single- parameter predictor of vapor pressures and octanol-air partitioning coefficients of non-polar compounds: a-priori approach and results" Atmos. Environ . 38 213-225 (2004)