A better understanding of the ultrafast dynamics of the excited electronic state helps chemists gain insight into the processes that are important in dictating chemical reactivity. Following the initial absorption of a photon, different microscopic processes, such as vibrational relaxation and solvent reorganization, take place on the ultrafast timescale. Studying the relaxation of the excited electronic state through time resolving the Stokes shift, where solvent molecules respond to charge redistribution, is one way to understand the relaxation of the excited electronic state. Applying two-dimensional electronic spectroscopy to cresyl violet dissolved in methanol we measured the ultrafast solvation dynamics. We extract timescales associated with the inertial solvent response by expanding on a general procedure for extracting the dynamic Stokes shift from the 2D electronic spectra. We demonstrate that the inclusion of oscillatory components in the general procedure decreases error bars associated with the inertial solvent response. <br/>

Ultrafast solvation dynamics of cresyl violet probed by two-dimensional electronic spectroscopy

2019 Fall National Meeting

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