Atmospheric and interfacial reaction dynamics

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Over the past funding period we have made significant progress in several areas related to heterogeneous atmospheric chemistry of aqueous, ice and "urban grime" surfaces. We have developed fluorescent probes for determining pH at interfaces and used these to track reactions there; we have demonstrated the ice-surface sensitivity of glancing-angle Raman probes and started to use these to interrogate the quasi-liquid layer; we have quantified the influence of various monolayer organic coatings on ozonation reactions at the air-water interface; we have started to explore and quantify photochemical and especially, photosensitized reactions occurring at interfaces. In many, if not most of these endeavours, we have been the first group to report the technique or its use in atmospheric chemistry.