SYNTHESIS AND CHARACTERIZATION OF AZO TYPE SIDE CHAIN LIQUID CRYSTALLINE POLYSILOXANE

摘要

A novel side chain liquid crystalline polymer （SCLCP） combining the polysiloxane as main chain with azo-based mesogen moieties as side chain through a flexible spacer has been synthesized by the hydrosilylation reaction using Cp2PtCl2 as catalyst. The phase transition behavior of both side chain monomer (AZO-C6C11)and polymer (P-AZO-C6C11)has been characterized via combination of hot-stage polarized microscope, DSC and X-ray diffraction methods （including temperature-variation and quenching techniques）. As normal, the transition process included K→S→N→I. Some pretransition features have been observed.