项目名称: 含有机膦盐分子的铁电与介电研究
项目编号: No.21471032
项目类型: 面上项目
立项/批准年度: 2015
项目学科: 数理科学和化学
项目作者: 叶琼
作者单位: 东南大学
项目金额: 90万元
中文摘要: 分子基铁电体与现运用较广的氧化物型铁电体不同,具有可设计剪裁、柔性可塑性强易弯曲、合成条件温和、材料环保、质轻等优点,通过可控设计与合成筛选,可望获得性能稳定优越的分子基铁电体,产生实际的应用价值。这方面的研究无论是对理论基础研究还是实际应用都具有非常重要的意义。本项目拟以含有机膦盐类阳离子为构筑块,通过超分子相互作用,并某些方面糅合无机化合物金属d和f轨道性能的多样性,合成一系列新颖的分子铁电体,并对其结构、铁电、介电与压电性质进行系统深入的研究,总结结构与性质之间的联系,深入探讨该类铁电体的铁电机理,为今后的铁电材料的设计和应用打下基础。
中文关键词: 铁电;介电;压电;可控合成;分子基
英文摘要: Molecule-based ferroelectrics,different from the oxide ferroelectrics, have several advantages as shown in below: 1. Their structures and properties are controllable design and easy to tailor; 2.They are flexible and easy to bend to apply to flexible electric devices; 3. Mild and environmental synthesis conditions; 4. Light weight, will be applied in aerospace filed. The project intends to synthesize a series of novel molecular ferroelectrics using phosphonic salts as building blocks, through supramolecular interaction and blending diversities of d and f orbitals performance of inorganic compounds. Further, the project will study the structures, ferroelectric, dielectric and piezoelectric in depth,summarize the relationships between the structure and property,explore the mechanism of ferroelectric, and lay the foundation for the design and application of ferroelectric materials in future.
英文关键词: Ferroelectric;Dielectric;Piezoelectric;Controlable synthesis;Molecule-base