Substituted siloxysilanes and the structure of oligomeric liquid crystals
Abstract
The sequential addition of 4-cyanobiphenyl moieties to a silyl core unit results in a modification of the molecular shape of the molecules from rod-like to cross-shaped. The variation of molecular size and shape determines the nature (interdigitated SmAd or monolayer SmAl) and the stability range of the liquid-crystalline phases of these materials.