Our group is investigating physics and chemistry of ices. We use various surface science techniques to probe complex reaction dynamics as well as underlying mechanisms occurring in ice and at its surface. Through molecular modelling and numerical simulations, we endeavour to provide molecular level interpretations leading to a better understanding of environmental problems such as heterogeneous chemistry phenomena occurring in the atmosphere.
Surface-Enhanced Nitrate Photolysis on Ice
G. Marcotte, P. Marchand, S. Pronovost, P. Ayotte, C. Laffon, P. Parent. J. Phys. Chem. A 2015. doi:10.1021/jp511173w
Manipulation of block copolymer vesicles using CO2: Dissociation or “breathing”
B. Yan, D. Han, O. Boissière, P. Ayotte, Y. Zhao, Soft Matter, 2013, 9, 2011-2016.
Dissociative adsorption of nitric acid at the surface of amorphous solid water revealed by X-ray absorption spectroscopy
G. Marcotte, P. Ayotte, A. Bendounan, F. Sirotti, C. Laffon, P. Parent, Journal of Physical Chemistry Letters, 2013, 4, 2643-2648.
Preparation, isolation, storage, and spectroscopic characterization of water vapor enriched in the ortho-H2O nuclear spin isomer
P.-A. Turgeon, P. Ayotte, E. Lisitsin, Y. Meir, T. Kravchuk, G. Alexandrowicz, Physical Review A – Atomic, Molecular, and Optical Physics, 2012, 86.
Spectroscopic study of HNO3 dissociation on ice
P. Marchand, G. Marcotte, P. Ayotte, Journal of Physical Chemistry A, 2012, 116, 12112-12122.