An experimental approach for the formation of solvated ionic clusters and their vibrational spectroscopy will be presented. This recently developed apparatus combines electrospray ionization, two cryogenic ion traps and a TOF infrared photofragmentation spectrometer, to allow for a more universal and controlled formation of weakly-bound clusters of interest. Recent results on the spectroscopy of these solvated ions, many of which exhibit large amplitude vibrational motions, will be presented and discussed. In particular, this talk will present the structural evolution of glycylglycine as a function of stepwise solvation, and show how the presence of just a few water can modify the geometry of this model peptide. I will also present results on metal hydroxide (MOH+) containing species as well as reaction intermediates in the catalytic oxidation of water by [Ru(bpy)(tpy)(H2O)]2+ complex. Both of these systems exhibit characteristic large amplitude motions involving strongly interacting water molecules.

Controlled formation and vibrational characterization of large solvated ionic clusters

251st National Meeting (2016)

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