초록 |
Nonlinear optical (NLO) polymers have been focused because of their potential applications in the field of electro-optic devices. Main-chain NLO polymers have good thermal stability, but they often do not dissolve in organic solvents, which make them unusable to fabricate stable noncentrosymmetric films. Side-chain NLO polymers have the advantages such as good solubility and high level of NLO chromophore, but they often suffer from poor stability of dipole alignments at high temperatures. In this work we prepared a novel X-type polyester containing 4-carbomethoxycyanovinyl-6-nitroresorcinoxy groups as NLO chromophores, which constitute parts of the polymer backbone. This X-type NLO polymer is expected to have the advantages of both main-chain and side-chain NLO polymers, namely stable dipole alignment and good solubility. After confirming the structure of the resulting polymer, we investigated its properties. |