Enhanced diastereocontrol via strong light-matter interactions in an optical cavity

Abstract

The enantiopurification of racemic mixtures of chiral molecules is important for a range of applications. Recent work has shown that chiral group-directed photoisomerization is a promising approach to enantioenrich racemic mixtures of BINOL, but increased control of the diasteriomeric excess (de) is necessary for its broad utility. Here we develop a cavity quantum electrodynamics (QED) generalization of time-dependent density functional theory and demonstrate computationally that strong light-matter coupling can alter the de of chiral group-directed photoisomerization of BINOL. The relative orientation of the cavity mode polarization and the molecules in the cavity dictates the nature of the cavity interactions, which either enhance the de of the (R)-BINOL diasteriomer (from 17% to $\approx$ 40%) or invert the favorability to the (S)-BINOL derivative (to $\approx$ 34% de). The latter outcome is particularly remarkable because it indicates that the preference in diasteriomer can be influenced via orientational control, without changing the chirality of the directing group. We demonstrate that the observed effect stems from cavity-induced changes to the Kohn-Sham orbitals of the ground state.

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• Variational Lang-Firsov approach plus Møller-Plesset perturbation theory with applications to ab initio polariton chemistry
• Engineering flat bands in twisted-bilayer graphene away from the magic angle with chiral optical cavities
• Do Molecular Geometries Change Under Vibrational Strong Coupling?
• Vacuum-Induced Symmetry Breaking of Chiral Enantiomer Formation in Chemical Reactions
• Simulating polaritonic ground states on noisy quantum devices
• Scalable Quantum Monte Carlo Method for Polariton Chemistry via Mixed Block Sparsity and Tensor Hypercontraction Method