Enantiodetection of chiral molecules via two-dimensional spectroscopy

• URL: http://arxiv.org/abs/2112.07597v1
• Date: Fri, 10 Dec 2021 08:37:11 GMT
• Title: Enantiodetection of chiral molecules via two-dimensional spectroscopy
• Authors: Mao-Rui Cai, Chong Ye, Hui Dong, and Yong Li
• Abstract summary: Enantiodetection of chiral molecules is important to pharmaceutical drug production, chemical reaction control, and biological function designs. Traditional optical methods of enantiodetection rely on the weak magnetic-dipole or electric-quadrupole interactions, and in turn suffer from the weak signal and low sensitivity. We propose a new optical enantiodetection method to determine the enantiomeric excess via two-dimensional (2D) spectroscopy of the chiral mixture driven by three electromagnetic fields.
• Score: 5.097874180012541
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Enantiodetection of chiral molecules is important to pharmaceutical drug production, chemical reaction control, and biological function designs. Traditional optical methods of enantiodetection rely on the weak magnetic-dipole or electric-quadrupole interactions, and in turn suffer from the weak signal and low sensitivity. We propose a new optical enantiodetection method to determine the enantiomeric excess via two-dimensional (2D) spectroscopy of the chiral mixture driven by three electromagnetic fields. The quantities of left- and right- handed chiral molecules are reflected by the intensities of different peaks on the 2D spectrum, separated by the chirality-dependent frequency shifts resulting from the relative strong electric-dipole interactions between the chiral molecules and the driving fields. Thus, the enantiomeric excess can be determined via the intensity ratio of the peaks for the two enantiomers.

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