Yachmenev, A; Onvlee, J; Zak, E; Owens, A; Küpper, J; (2019) Field-Induced Diastereomers for Chiral Separation. Physical Review Letters , 123 (24) , Article 243202. 10.1103/physrevlett.123.243202.

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Abstract

A novel approach for the state-specific enantiomeric enrichment and the spatial separation of enantiomers is presented. Our scheme utilizes techniques from strong-field laser physics—specifically an optical centrifuge in conjunction with a static electric field—to create a chiral field with defined handedness. Molecular enantiomers experience unique rotational excitation dynamics, and this can be exploited to spatially separate the enantiomers using electrostatic deflection. Notably, the rotational-statespecific enantiomeric enhancement and its handedness are fully controllable. To explain these effects, the conceptual framework of field-induced diastereomers of a chiral molecule is introduced and computationally demonstrated through robust quantum-mechanical simulations on the prototypical chiral molecule propylene oxide (C3H6O), for which ensembles with an enantiomeric excess of up to 30% were obtained.

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