A. Jacobi et W. Weissflog, LATERALLY AROMATIC BRANCHED 2-RING MESOGENS CONNECTED TO POLYSILOXANEBACKBONE, Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals, 304, 1997, pp. 15-23
Surprisingly, two-ring mesogens with a phenyl ring containing lateral
segment can show liquid-crystalline behaviour. Linking to a polysiloxa
ne backbone can be realized via three different para positions of the
mesogens. Polymorphism and mesophase stabilization depend strongly on
the position and type of substituents as well as on the length and pos
ition of the spacer.