| Abstract: | Novel side-chain type liquid crystalline poly(aryleneethynylene)s with a biphenyl or azobenzene moiety in the side chain were obtained by coupling reaction between a dihalo-aromatic compound and a diethynyl-aromatic compound using a Pd complex as a catalyst. All polymers exhibit a stable enantiotropic liquid crystalline phase. The degree of orientation of the polymer backbone was confirmed by UV-vis measurements with polarized light. High quantum yield of fluorescence was obtained for these polymers. |
