R. Brettle et al., SYNTHESIS OF NEW LIQUID-CRYSTALLINE COMPOUNDS BASED ON 1,4-DIARYLBUTA-1,3-DIENES, Journal of the Chemical Society. Perkin transactions. I, (7), 1993, pp. 775-781
A group of (E,E)-1,4-diarylbuta-1,3-dienes, substituted in the para-po
sition of one aryl ring by an alkoxy-group and in the para-position of
the other aryl group by a cyano- or halogeno-group have been synthesi
sed. The compounds are mesogenic and their physical properties make th
em suitable for liquid crystal display devices when mixed with known l
iquid crystal materials.