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Perturbative Theoretical Model Of Electronic Transient Circular Dichroism Spectroscopy Of Molecular Aggregates, Paul C. Arpin, Daniel B. Turner
Perturbative Theoretical Model Of Electronic Transient Circular Dichroism Spectroscopy Of Molecular Aggregates, Paul C. Arpin, Daniel B. Turner
Materials Science and Engineering Faculty Publications and Presentations
A chiral analog of transient absorption spectroscopy, transient circular dichroism (TCD) spectroscopy is an emerging time-resolved method. Both spectroscopic methods can probe the electronic transitions of a sample, and TCD is additionally sensitive to the dynamic aspects of chirality, such as those induced by molecular excitons. Here, we develop a theoretical description of TCD for electronic multi-level models in which the pump pulse is linearly polarized and probe pulse is alternately left- and right-circularly polarized. We derive effective response functions analogous to those often used to describe other four-wave mixing methods and then simulate and analyze TCD spectra for three …