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- [41] Side-chain liquid-crystalline polyoxetanes with a spacer-separated azobenzene moiety .2. Preparation and characterization of polyoxetanes derived from 4-(4-alkoxyphenylazo)phenyl 4-[7-(3-methyl-3-oxetanyl)-1,6-dioxaheptyl]benzoates BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 1997, 70 (01) : 175 - 187