6533b871fe1ef96bd12d232b
RESEARCH PRODUCT
Structure and Dilution of Mesogenic Side Chains in Liquid Crystalline Polysiloxanes
Frank KuschelSiegmar DieleS. OelsnerHelmut RingsdorfBernd Hisgensubject
CrystallographyMaterials scienceLiquid crystallineStereochemistryMesogenCopolymerSide chainMoietyDilutiondescription
Abstract The structure of the smectic phases in four series of homo- and copolymers based on dimethylsiloxane chains with a definite variation of the concentration of the paired mesogenic side chains has been investigated by means of X-ray methods. The dilution of the mesogenic moiety was achieved by insertion of additional dimethylsiloxane segments. A nearly linear dependence of the layer spacings on the dilution has been found. A model of the structure is proposed which consists of two sublayers one of which contains the irregularly arranged main chain whereas the other one is formed by the side chains.
year | journal | country | edition | language |
---|---|---|---|---|
1988-02-01 | Molecular Crystals and Liquid Crystals Incorporating Nonlinear Optics |