Benjamin Meaker Visiting Professor Stephen Bradforth

7 September 2018, 3.00 PM - 7 September 2018, 4.00 PM

Professor Stephen Bradforth

School of Chemistry, LT4

Photoelectron processes in liquid water: new methods for probing elementary reactivity and excited state processes

Departmental Lecture/Graduate Student Seminar

In the condensed phase, intermolecular interactions often control chemical reactivity and photochemistry but are complex to quantify. Understanding how the electronic structure of an aqueous solute is intricately bound up with the arrangement of the host liquid provides insight into how reactions are influenced by the environment in which they take place. Our group has most recently exploited liquid-jet photoelectron spectroscopy to learn about the orbital energies and shapes for neat water as well as for textbook aqueous inorganic ions and biomolecules. *† With femtosecond time resolution, the non-equilibrium evolution of the valence orbitals involved in excited state reactions can then be tracked. 

* C.A. Schroeder, E. Pluhařová, R. Seidel, W.P. Schroeder, M. Faubel, P. Slavíček, B. Winter, P. Jungwirth, S.E. Bradforth, “Oxidation Half-Reaction of Aqueous Nucleosides and Nucleotides via Photoelectron Spectroscopy Augmented by Ab Initio Calculations” J. Am. Chem. Soc. 137, 201 (2015). 
† R. Seidel, B. Winter, S.E. Bradforth, “Valence Electronic Structure of Aqueous Solutions: Insights From Photoelectron Spectroscopy” Annu. Rev. Phys. Chem. 67, 283 (2016).

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