Separation of enantiomers by their enantiospecific interaction with achiral magnetic substrates

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Science  22 Jun 2018:
Vol. 360, Issue 6395, pp. 1331-1334
DOI: 10.1126/science.aar4265

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Taking enantiomers for a spin

There are two common ways to distinguish mirror-image molecules, or enantiomers. The first relies on their distinct interactions with circularly polarized light, the second on their interactions with a pure enantiomer of some other molecule. Now Banerjee-Ghosh et al. report a conceptually different approach to chiral resolution. Experiments showed that, depending on the direction of magnetization, chiral oligopeptides, oligonucleotides, and amino acids have enantiospecific differences in initial adsorption rates on ferromagnetic surfaces. This effect is attributed to enantiospecific induced spin polarization.

Science, this issue p. 1331