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Keywords:

  • azo compounds;
  • circular dichroism;
  • isomerization;
  • molecular switches;
  • photochemistry
Thumbnail image of graphical abstract

By embedding an azobenzene unit into a chiral scaffold, switching of azobenzene from the trans-(P) isomer to the cis-(P) isomer and back was achieved (black arrows in picture). The embedding leads to a flipping process in which the phenyl rings can only move directly towards one another in the switching process.