SEARCH

SEARCH BY CITATION

Keywords:

  • Information recording;
  • Liquid crystals;
  • Photochromic materials;
  • Self-assembly

Photoinduced reversible structural changes of anisotropic physical gels are applied to re-writable patterning (see Figure, a photo of a re-writable pattern). The change between a nematic gel and a cholesteric gel via a cholesteric liquid-crystalline sol state is induced by transcis photoisomerization of the azobenzene moieties in a chiral hydrogen-bonded gelator blended with a nematic liquid crystal.