In situ Second-Harmonic Generation Circular Dichroism with Submonolayer Sensitivity |
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| Authors: | Alexander von Weber Matthias Jakob Eva Kratzer Dr Aras Kartouzian Prof Ueli Heiz |
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| Institution: | Chair of Physical Chemistry Chemistry Department & Catalysis Research Center, Technical University of Munich, Lichtenbergstr. 4, D-, 85748 Garching, Germany |
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| Abstract: | In this work, we present an experimental setup for the in situ and ex situ study of the optical activity of samples, which can be prepared under ultra-high vacuum (UHV) conditions by second-harmonic generation circular dichroism (SHG-CD) over a broad spectral range. The use of a racemic mixture as a qualified reference for the anisotropy factor is described and, as an example, the chiroptical properties of 1.5 μm thick (multilayers) as well as sub-monolayer thin films of the R- and S-enantiomer of 1,1′-Bi-2-naphthol (BINOL) evaporated onto BK7 substrates were investigated. |
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| Keywords: | circular dichroism laser spectroscopy polarized spectroscopy second-harmonic generation submonolayer sensitivity |
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