Hyper-Rayleigh scattering optical activity: Theory, symmetry considerations and quantum chemistry applications

Bonvicini, Andrea, Forbes, Kayn ORCID: https://orcid.org/0000-0002-8884-3496, Andrews, David and Champagne, Benoît (2023) Hyper-Rayleigh scattering optical activity: Theory, symmetry considerations and quantum chemistry applications. The Journal of Chemical Physics, 158 (20). ISSN 0021-9606

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Abstract

This work reports on the first computational quantum-chemistry implementation of the hyper-Rayleigh scattering optical activity (HRS-OA), a nonlinear chiroptical phenomenon. First, from the basics of the theory, which is based on quantum electrodynamics, and focusing on the electric dipole, magnetic-dipole, and electric-quadrupole interactions, the equations for the simulation of the differential scattering ratios of HRS-OA are re-derived. Then, for the first time, computations of HRS-OA quantities are presented and analyzed. They have been enacted on a prototypical chiral organic molecule (methyloxirane) at the time-dependent density functional theory level using a broad range of atomic orbital basis sets. In particular, (i) we analyze the basis set convergence, demonstrating that converged results require basis sets with both diffuse and polarization functions, (ii) we discuss the relative amplitudes of the five contributions to the differential scattering ratios, and (iii) we study the effects of origin-dependence and derived the expression of the tensor shifts and we prove the origin-independence of the theory for exact wavefunctions. Our computations show the ability of HRS-OA as a nonlinear chiroptical method, able to distinguish between the enantiomers of the same chiral molecule.

Item Type: Article
Uncontrolled Keywords: physics and astronomy(all),physical and theoretical chemistry ,/dk/atira/pure/subjectarea/asjc/3100
Faculty \ School: Faculty of Science > School of Chemistry
UEA Research Groups: Faculty of Science > Research Groups > Centre for Photonics and Quantum Science
Faculty of Science > Research Groups > Chemistry of Light and Energy
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Depositing User: LivePure Connector
Date Deposited: 22 May 2023 11:30
Last Modified: 05 Jun 2023 09:30
URI: https://ueaeprints.uea.ac.uk/id/eprint/92121
DOI: 10.1063/5.0152784

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