Synthesis and Properties of Polymers from Monosubstituted Acetylene Derivatives Bearing Ferroelectric Liquid Crystalline Groups
作者:Hiromasa Goto、Xiaoman Dai、Takenori Ueoka、Kazuo Akagi
DOI:10.1021/ma035765g
日期:2004.6.1
Novel liquid crystalline polyacetylene derivatives were developed as advanced LC conjugated polymers with quick response to an electric field used as external force. In practice, we synthesized ferroelectric LC conjugated polymers by introducing fluorine-containing chiral LC groups into side chains of polyacetylenes. Phase-transition behaviors of these polymers were examined by differential scanning
新型液晶聚乙炔衍生物已开发为高级LC共轭聚合物,对用作外力的电场具有快速响应。在实践中,我们通过将含氟手性LC基团引入聚乙炔的侧链来合成铁电LC共轭聚合物。通过差示扫描量热法和偏振光学显微镜检查了这些聚合物的相变行为。用X射线衍射测量评估了中间相以及更高阶的结构。合成的聚合物在加热和冷却过程中显示出手性向列相(N *),扭曲晶界近晶A(TGBA *)和手性近晶(SmC *)相。通过观察SmC *相,我们可以预期该聚合物应表现出铁电性。