Adsorption plays vital roles in many processes including catalysis, sensing, and nanomaterials design. However, quantifying molecular adsorption, especially at the nanoscale, is challenging, hindering the exploration of its utilization on nanomaterials that possess heterogeneity across different length scales.<br/>In this talk, I will introduce our imaging technique that allows for mapping the adsorption affinity and cooperativity of small molecule/ion and polymer ligands on gold nanoparticles (pseudospheres, plates, and rods) in situ under ambient solution conditions. The trends of adsorption affinity and cooperativity on different sub-particle regions, such as the corners, edges, and facets on the nanoplates, will be discussed and rationalized.

Mapping ligand adsorption affinity and cooperativity in solution at the sub-particle resolution

ACS Spring 2022

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