高岭土-极性客体插层超分子铁电材料的制备及性能研究

项目名称： 高岭土-极性客体插层超分子铁电材料的制备及性能研究

项目编号： No.21201009

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 无机化学

项目作者： 赵顺平

作者单位： 安庆师范学院

项目金额： 26万元

中文摘要： 高介电常数的铁电材料在信息电子和固态器件方面有着非常重要的应用，已成为凝聚态物理、固体电子学领域的研究热点。本项目根据超分子化学设计思想，选择天然矿物高岭土作为主体材料，并借助不锈钢高压釜，提升反应体系压力，实现在温和条件下，将设计合成的一系列含羟基、羰基、氨基等基团的极性客体分子插入高岭土层间，制备新的高岭土插层型超分子铁电材料。通过对高岭土的预处理和极性分子的预合成，优化反应条件，测试相关热力学性能，构建不锈钢高压釜法制备高岭土插层型超分子化合物的理论模型，并进行铁电和介电性能研究。本研究为铁电和高介电材料设计提供了新思路，同时丰富了超分子化合物的制备方法。不仅能为不锈钢高压釜法制备高岭土插层型超分子化合物的进一步研究提供关键参数，而且为今后层状矿物材料在铁电和高介电材料领域的开发和利用，提供理论依据。

中文关键词： 高岭土；高压釜；超分子；介电；铁电

英文摘要： Ferroelectric materials with giant dielectric constants have become one focus of condensed matter physics and solid-state electric fields for their important applications in information electric and solid-state devices. Based on the design idea of supramolecular chemistry, the project chooses kaolinite as host materials and a series of designed and synthesized polar molecules with special organic functional groups, such as hydroxyl, carbonyl, amino group and so on, as guest ones to insert into kaolinite layers in order to produce one new kaolinite intercalation supramolecular ferroelectric materials under mild reaction conditions by means of autoclave improved the pressure of system. After kaolinite pretreatment, polar molecules synthesis, optimization of reaction conditions and tests of related thermodynamic performances, a theoretical model for preparation of kaolinite intercalation supramolecular compounds in autoclave will be constructed and their ferroelectric and dielectric property will be researched. The research may provide a novel attacking approach for designation of ferroelectric and giant dielectric materials, and also enrich preparation methods of supramolecular compounds. As a result, it may not only present some key paraments for deeply researching of this method, but also provide the theory ba

英文关键词： kaolinite；autoclave；supramolecular；dielectric；ferroelecric