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Keywords:

  • liquid crystals;
  • EPR spectrocopy;
  • molecular dynamics;
  • phase transitions;
  • spin probes
Thumbnail image of graphical abstract

Discotics studied by EPR: The application of EPR spectroscopy to columnar discotic liquid crystals using a novel rigid-core nitroxide spin probe (see picture) is possible. EPR spectra measured at different temperatures across three phases of hexakis(n-hexyloxy)triphenylene show a strong sensitivity to the phase composition, molecular rotational dynamics, and columnar order.