Study on Synthesis and Orientational Behavior in Side Chain Liquid Crystal Polymers with Self-Organizing Properties

利用相对较强的相互作用，如离子和氢键，在设计功能侧链液晶聚合物方面具有很大的潜力。在低相对分子质量和聚合物液晶体系中，由于库仑力形成离子聚集，离子基团有效地产生近晶相，提高了热稳定性。具有离子聚合物主链的侧链液晶聚合物容易形成单晶区类型的液晶取向。此外，还制备了离子基团连接到多离子上的液晶聚合物离子络合物。液晶离子络合物在液晶相中具有较高的迁移率。但液晶取向保持在玻璃态，氢键的形成提高了侧链液晶聚合物的液晶度。特别是，相同单元之间的氢键作用，形成了近晶相，提高了热稳定性。

The use of relatively strong interactions such as ionic and hydrogen bondings had great potential in the design of the functional side chain liquid crystal polymers.In low-molecular-weight and polymeric liquid crystal systems, ionic groups acted effectively in producing smectic phases with enhanced thermal stability, due to the formation of ionic aggregation by Coulombic forces. The side chain liquid crystal polymers with a ionic polymer backbone formed easily a monodomain type of a liquid crystalline orientation. Furthermore, a liquid crystalline polymeric ion complexes in which ionic groups are attached to a polyion were prepared. The liquid crystalline ion complexes had the high mobility in liquid crystalline phases. However, the liquid crystalline orientation maintained at the glass state.The formation of hydrogen bondings led to the enhancement of liquid crystallinity in the side chain liquid crystal polymer. In especial, the hydrogen bondings between identical units acted, forming a smectic phase and enhanced the thermal stability.