Circular dichroism

Circular dichroism is the difference in the absorption of left- and right-handed circularly polarized light that occurs when a molecule contains one or more chiral, light-absorbing groups. It is used as a spectroscopic technique to study chiral molecules, particularly for analyzing the secondary structure of macromolecules such as proteins.

Latest Research and Reviews

News and Comment

  • Research Highlights |

    Chiroptical molecular switches change chirality in response to light. Christian Petermayer and Henry Dube report a new type of hemiindigo photoswitches that feature axial chiral substituents and are characterized by an unusual decoupling of the absorption and the circular dichroism (CD) spectra.

    • Gabriella Graziano
  • News & Views |

    Crossing two focused laser beams with opposite circular polarization makes the production and application of circularly polarized light in the extreme ultraviolet and soft X-ray spectral regions considerably easier and more efficient.

    • Kjeld S. E. Eikema
    Nature Photonics 9, 710-712