| 초록 |
Materials with nonlinear optical (NLO) activities have been extensively studied over the past decade because of their potential applications in the field of field of electro-optic devices. Because of their good processability and chemical flexibility, NLO polymers are more attractive compared with the traditional inorganic materials. In the developments of NLO polymers, stabilization of electrically-induced dipole alignment is one of important criteria. A polyurethane matrix forms extensive hydrogen bonding between urethane linkages, with increased rigidity preventing the relaxation of induced dipoles. Physically cross-linked systems via hydrogen bonds have the advantages such as homogeneity and good processability. In this work we prepared novel X-type polyurethane containing 4-(2,2-dicyanovinyl)-6-acetylresorcinoxy groups as NLO chromophores, which constitute parts of the polymer backbone. After confirming the structure of the resulting polymer, we investigated its properties. |
