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Résumé
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.
langue originale | Anglais |
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Numéro d'article | 204103 |
journal | The Journal of chemical physics |
Volume | 158 |
Numéro de publication | 20 |
Les DOIs | |
Etat de la publication | Publié - 28 mai 2023 |
Empreinte digitale
Examiner les sujets de recherche de « Hyper-Rayleigh scattering optical activity: Theory, symmetry considerations, and quantum chemistry applications ». Ensemble, ils forment une empreinte digitale unique.Projets
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Helices oligomériques fonctionnelles comme matériaux moléculaires chiraux polyvalents pour l'optique et la chiroptique non linéaire du deuxième ordre
CHAMPAGNE, B. (Responsable du Projet)
1/01/22 → 31/12/23
Projet: Recherche
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Renouvellement d’équipements pour le Consortium des Equipements de Calcul Intensif (CECI)
Bontempi, G. (Responsable du Projet), CHAMPAGNE, B. (CoPI), Geuzaine , C. (CoPI), RIGNANESE, G. M. (CoPI) & Lazzaroni, R. (CoPI)
1/01/22 → 31/12/23
Projet: Recherche
Équipement
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Plateforme Technologique Calcul Intensif
Champagne, B. (!!Manager)
Plateforme technologique Calcul intensifEquipement/installations: Plateforme technolgique
Presse/médias
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Research from University of Namur Provides New Data on Chemical Physics (Hyper-Rayleigh scattering optical activity: Theory, symmetry considerations, and quantum chemistry applications)
5/06/23
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