Erlangen 2018 – scientific programme
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MO: Fachverband Molekülphysik
MO 17: Posters 2: Cold Molecules and Clusters
MO 17.19: Poster
Wednesday, March 7, 2018, 16:15–18:15, Orangerie
THz/IR spectroscopy of glycine-water in helium nanodroplets — •Nitish Pal1, Devendra Mani1, Raffael Schwan1, Gerhard Schwaab1, Britta Redlich2, Lex van der Meer2, and Martina Havenith1 — 1Physikalische Chemie II, Ruhr-Universität Bochum, Germany — 2Institute for Molecules and Materials (IMM), Radboud University Nijmegen, Nijmegen, Netherlands
It is well known that glycine exists in the neutral form in gaseous state and in the zwitterionic form in aqueous solution. Numerous experimental [1] and theoretical [2] studies have been carried out to understand this transformation. One of the most important goals has been to determine the minimum number of water molecules needed for such transformation.
We have already reported infrared spectra of glycine and 1:1 glycine-water complexes [3], now we are exploring the intermolecular proton transfer mechanism by stepwise adding water molecules to glycine molecule in helium droplets. The superfluid medium of helium nanodroplets allows a barrier-free diffusion of the dopant molecules and enables the formation of molecular clusters at 0.37 K temperature. The experiments are carried out using helium nanodroplet spectroscopy technique in combination with Free Electron Laser (FEL) at FELIX laboratory in Nijmegen. Herein we present the results of glycine-water infrared absorption spectra.
[1] Espinoza, C et al., J. Phys. Chem. A., 114, 5919, (2010).
[2] Tudela, R et al., J. Phys. Chem. Lett., 7, 5137, (2016).
[3] Kaufmann, M et al., Phys. Chem. Chem. Phys., 18, 28082, (2016).