Rostock 2019 – wissenschaftliches Programm

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MO: Fachverband Molekülphysik

MO 10: Posters 1: Cold Molecules, High Resolution Spectroscopy, and Theory

MO 10.11: Poster

Dienstag, 12. März 2019, 16:30–18:30, S Foyer LLM

IR spectroscopy of glycine-water in helium nanodroplets — •Nitish Pal¹, Devendra Mani¹, Raffael Schwan¹, Gerhard Schwaab¹, Britta Redlich², Lex Van Der Meer² und Martina Havenith¹ — ¹Physikalische Chemie II, Ruhr-Universität Bochum, Germany — ²Institute for Molecules and Materials (IMM), Radboud University Nijmegen, Nijmegen, Netherlands

We have studied the microsolvation of glycine with water molecules using helium droplet isolation infrared spectroscopy. Glycine exists in neutral form in gaseous state and in zwitterionic form in aqueous solutions. We address the question: "what is the minimum number of water molecules required to convert a neutral glycine molecule to its zwitterionic form?" The stepwise addition of water molecules to one glycine molecule was achieved using helium droplets isolation technique. The superfluid helium droplets allow a barrier free diffusion of the dopant molecules and enable the formation of large molecular clusters. The infrared spectra were recorded in the range of 1000-1850 cm⁻¹, using the free electron lasers (FELs) at FELIX laboratory in Nijmegen.