1 Institute of Organic Chemistry and CENIDE, University of Duisburg-Essen, Universitätsstraße 7, Essen 45141, Germany. jens.voskuhl@uni-due.de michael.giese@uni-due.de.
A series of hydrogen-bonded liquid crystals based on resveratrol and resveratrone is reported and investigated with respect to their photo-switchability (at 405 nm) and photo-cyclisation (at 300 nm).