Dresden 2011 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 60: Poster Session IV (Solid/liquid interfaces; Semiconductors; Oxides and insulators; Graphene; Plasmonics and nanooptics; Electronic Structure; Surface chemical reactions; Heterogeneous catalysis)

O 60.113: Poster

Mittwoch, 16. März 2011, 17:30–21:00, P4

Cluster chemistry in the gas phase: a new approach for laser spectroscopy — •Kathrin Lange, Bradley Robert Visser, Martin Tschurl, Ulrich Kaspar Heiz, and Ulrich Boesl-von Grafenstein — Lichtenbergstr. 4, 85748 Garching

The characterization and determination of organic molecules which exist as enantiomers or diastereomers are today of crucial importance especially for the pharmaceutical industry. It has been shown that chiral metal clusters are able to catalyse one form of the enantiomer or diastereomer [1].

The aim of the present work is to build a new setup to produce chiral metal clusters and to implement the idea of separating enantiomers by laser spectroscopy.

The chiral metal clusters will be produced by a laser vaporisation cluster source [2] and reacted with target organic species in the gas phase.

In this work we will describe the setup of our apparatus and a number of laser spectroscopy techniques (REMPI, CD Spectroscopy) in detail. These techniques will be used to induce photochemical processes in the metal cluster and molecule complexes to achieve enantiomeric or diastereomeric sensitive separation and detection [3].

References

[1] K. Sawai et al., Angew. Chem. Int. Ed. 2008, 47, 6917.

[2] T. G. Dietz, M. A. Duncan, D. E. Powers, et al., Journal of Chemical Physics 1981, 74, 6511.

[3] M. Speranza et al., Chirality 2009, 21, 119.