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Two-Step Enantio-Selective Optical Switch

2003; American Physical Society; Volume: 90; Issue: 3 Linguagem: Inglês

10.1103/physrevlett.90.033001

1092-0145

Petr Král, Ioannis Thanopulos, Moshe Shapiro, Doron Cohen,

Spectroscopy and Quantum Chemical Studies

We present an optical "enantio-selective switch" that, in two steps, turns a ("racemic") mixture of left-handed and right-handed chiral molecules into the enantiomerically pure state of interest. The optical switch is composed of an "enantio-discriminator" and an "enantio-converter" acting in tandem. The method is robust, insensitive to decay processes, and does not require molecular preorientation. We demonstrate the method on the purification of a racemate of (transiently chiral) D2S2 molecules, performed on the nanosecond time scale.