Watching Photoinduced Phenomena in Molecules and Materials: from the Perspective of Ultrafast Electronic and Nuclear Motions
Somnath Biswas, Postdoctoral researcher, Department of Chemistry, University of Washington
Time: Friday, August 30 2024
Time: 11:30AM - 1:00PM (Eastern Time)
Location: Physics Research Building 4138 and Zoom
ABSTRACT: The efficient transport of electronic excitation energy relies on the intricate, time-dependent interplay of electronic, vibrational (phonon), and vibronic (electron-phonon) motions employed by photo-excited molecules and materials. Achieving a complete description of these processes is challenging because it requires the simultaneous observation of both electronic and nuclear degrees of freedom using advanced spectroscopic tools. In this talk, I will describe the use of time-domain Raman spectroscopy to track structural dynamics and observe polaron formation in 2D materials. Next, I will discuss the application of multidimensional electronic-vibrational spectroscopy, which enables direct observation of the vibronic motions that drive intramolecular proton transfer in a molecule. These examples highlight the powerful capabilities of these spectroscopic methods and their potential to advance our understanding of complex photoinduced phenomena from molecules to functional materials.
This event is open the public.
Refreshments will be provided.
Zoom link here
Meeting ID: 981 2099 6071
Password: 038182
