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In situ Second‐Harmonic Generation Circular Dichroism with Submonolayer Sensitivity
Author(s) -
von Weber Alexander,
Jakob Matthias,
Kratzer Eva,
Kartouzian Aras,
Heiz Ueli
Publication year - 2019
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201800897
Subject(s) - circular dichroism , monolayer , in situ , second harmonic generation , anisotropy , enantiomer , materials science , analytical chemistry (journal) , chemistry , crystallography , optics , stereochemistry , nanotechnology , organic chemistry , physics , laser
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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