Small organic bases have been measured in atmospheric samples, with their sources ranging from industrial processing to animal husbandry.  These small organic amines are often highly soluble, being found in atmospheric condensed phases such as fogwater and rainwater. Additionally, they display acid-neutralization ability often greater than ammonia, yet little is known regarding their kinetic and thermodynamic properties. This presentation will describe the molecular level details of a number of organic amines at the vapor/liquid interface in the presence of electrolytes and acidic gas.  We find that these amines show very unique properties in terms of their bonding, structure, and orientation at aqueous surfaces.  The results of our studies using a combination of computation, vibrational sum frequency spectroscopy, and surface tension will report the properties inherent to these atmospherically relevant species at aqueous surfaces.

Means to an interface: Combined computation and spectroscopic studies of aqueous amine surfaces

248th National Meeting (2014)

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