原位二次谐波圆二色性，具有亚单层灵敏度。
In situ Second-Harmonic Generation Circular Dichroism with Submonolayer Sensitivity.
机构信息
Chair of Physical Chemistry Chemistry Department & Catalysis Research Center, Technical University of Munich, Lichtenbergstr. 4, D-, 85748, Garching, Germany.
出版信息
Chemphyschem. 2019 Jan 7;20(1):134-141. doi: 10.1002/cphc.201800897. Epub 2018 Nov 30.
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.
在这项工作中，我们提出了一种用于原位和异位研究样品旋光性的实验装置，该装置可通过在宽光谱范围内的二次谐波产生圆二色性（SHG-CD）在超高真空（UHV）条件下制备。描述了使用外消旋混合物作为各向异性因子的合格参考，并以 1.5μm 厚（多层）以及 R-和 S-对映体的 1,1'-双-2-萘酚（BINOL）的亚单层薄膜为例，研究了它们在 BK7 衬底上蒸发的旋光性质。
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