Graduate student Chathura de Alwis (Chem), research assistant professor Timothy R. Leftwich (MSE), and assistant professor Kathryn A. Perrine (Chem) published their seminal paper on their new surface technique, “New Approach to Simultaneous In Situ Measurements of the Air/Liquid/Solid Interface Using PM-IRRAS” in Langmuir on March 16, 2020.
Leftwich is an associate professor in the Department of Materials Science and Engineering and manager of the Surface Analysis Facility in the shared facility ACMAL, the Applied Chemical and Morphological Analysis Laboratory.
New Approach to Simultaneous In Situ Measurements of the Air/Liquid/Solid Interface Using PM-IRRAS
Chathura de Alwis, Timothy R. Leftwich, Kathryn A. Perrine
Langmuir 2020, XXXX, XXX, XXX-XXX
Publication Date: March 16, 2020
Vibrational spectroscopy techniques have evolved to measure gases, liquids, and solids at surfaces and interfaces. In the field of surface-sensitive vibrational spectroscopy, infrared spectroscopy measures the adsorption on surfaces and changes from reactions. Previous polarized modulated-infrared reflection–absorption spectroscopy (PM-IRRAS) measurements at the gas/solid interface were developed to observe catalytic reactions near reaction conditions.
This article presents a new method that is used to observe in situ adsorption of molecules using PM-IRRAS at the gas/liquid/solid interface. We demonstrate the meniscus method by measuring the adsorption of octadecanethiol on gold surfaces.