U. Gessner et al., THE INFLUENCE OF LATERAL SUBSTITUENTS IN THE MESOGENS OF LIQUID-CRYSTALLINE SIDE-GROUP COPOLYMETHACRYLATES ON THE PHASE-BEHAVIOR, Journal fur praktische Chemie, Chemiker-Zeitung, 337(7), 1995, pp. 582-588
The phase behaviour of lateral substituted side group copolymethacryla
tes was investigated. With structural changes it is possible to influe
nce the phase behaviour of the polymers. The lateral substituents have
a stronger influence in side group polymers then in low molecular sys
tems because of the coupling of the mesogens via the main chain. Accor
ding to simulations, the possibility of rotational motions of the side
groups around their long axis is hampered by a lateral substitution.
With the described structural changes in the mesogen we have synthesiz
ed side group copolymethacrylates on the border between the liquid cry
stalline and the amorphous state. In some further papers we will discu
ss the consequences of a lateral substitution in the mesogen in the de
scribed materials for the dielectrical and photochemical behaviour.