Light, Electrons, Protons: Lessons from Model Systems and Potentials for Photocatalysis

Seminar | February 14 | 4-5 p.m. |  Pitzer Auditorium, 120 Latimer Hall

 Prof. Jahan Dawlaty, Department of Chemistry, University of Southern California

 College of Chemistry

The inspiration for this talk comes from the photoelectrochemical
interface, which is a place rich with unknowns and unrealized
potentials. Electrons are excited by light either in the electrode or in the adsorbed molecules, charges traverse the electrode-electrolyte interface, protons flow from the bulk to complete redox reactions, and interfacial electric fields develop to balance chemical potential differences between the opposing phases.

In this talk, the complex chemistry at the interface will be used as a point of reference to motivate several chemical dynamics studies in small molecules, solids, and interfaces with the goal of generating new directions and ideas for understanding and driving interfacial reactions. New concepts that will be discussed are basicity in the excited state, solvation near an interface, electronic-vibrational dynamics in a solid made of a redox couple, and influencing proton
conductivity with light. Several avenues on how to apply this knowledge will be proposed.

 Light refreshments at The Coffee Lab at 3:50pm, 510-643-0572