Abstract
A series of side-chain liquid crystalline polymers (LCPs) have been prepared. Their chemical structures and properties have been fully investigated. Homopolymers P1 and P7 show a nematic phase and a smectic A phase, respectively, and copolymers P2-P6 reveal a cholesteric phase. The reflection wavelengths of P2-P6 exhibit blue shift. P2-P6 display selective reflection at temperatures below the glass transition on first cooling cycle, which cannot be observed on the first heating. The isotropic phase transition temperatures and glass transition temperatures of the polymers increase with the increase of cholesteric mesogens in the polymer systems.
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