抄録
A new reverse-mode light switching (transparent and opaque in undriven and driven states, respectively) has been demonstrated for the binary composite system composed of a pseudo side-chain liquid crystalline copolymer (pseudo-LCcoP) which induces spontaneous homeotropic alignment and low-molecular-weight liquid crystals (LCs). The cell with the spontaneous homeotropic alignment showed a transparent state due to a homeotropic anchoring of the pseudo-LCcoP at the surfaces of glass substrates. On the other hand, when a dc electric field was applied, the composite film became opaque due to the fluctuation of smectic like short-range order fragments being composed of the side chain part of the pseudo-LCcoP and the LCs. The light scattering state might arise from electric hydrodynamic motion of the smectic fragments an electric current effect.
