Syntheses and Optical Properties of Cholesteric Liquid Crystal Polymers Utilizing p-Phenylene Bis-(p-(3-acryloxy-2-methylpropyloxy)benzoate

  • Yoon, Ung-Chan (Department of Chemistry and the Center for Plastic Information System) ;
  • Choi, Jung-Hei (Department of Chemistry and the Center for Plastic Information System) ;
  • Jin, Sung-Ho (Department of Chemistry Education and the Center for Plastic Information System) ;
  • Song, Dong-Mi (Department of Chemical Engineering, Hong-Ik University)
  • Published : 2005.04.01

Abstract

We synthesized chiral choleseric liquid crystalline monomer p-phenylene bis-(p-3-acryloxy-2(S)-methylpropoxy)benzoate (1) and achiral nematic liquid crystalline monomer, p-phenylene p-acryloxy-6-hexyloxy-p-octyloxybenzoate (2) for the construction of cholesteric polymer network with a pitch gradient. In this research we attempted to synthesize cholesteric polymer film which have a wide reflection bandwidth in the region of visible wavelength with the synthesized chiral cholesteric monomer 1 and nematic monomer 2 under various photopoly merization conditions. We succeeded to construct cholesteric polymer film network with a pitch gradient covering more than 200 nm bandwidth in the visible wavelength by diffusion controlled photostructuring method.

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