Interactions between molecules and nanoscale particles drive a range of phenomena from the formation of atmospheric aerosols from trace vapors to nanoparticle catalysis, but the disparate length scales and conceptual models for these two regimes complicates analysis of their interfaces. We have been extending classic cluster chemistry experimental techniques to more compositionally-complex systems, offering glimpses of the fleeting interactions between small moleclues and particle surfaces that drive complex chemical phenomena. We use these insights to develop intuitive frameworks to understand the chemical mechanisms and fundamental interactions underlying these phenomena. Examples will be shown for the growth of acid-base particles involved in atmospheric new particle formation and surface interactions of gold nanoclusters studies as potential catalysts.

Cluster chemistry studies of molecule particle interfaces

ACS Fall 2021

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