多金属氧簇/嵌段共聚物杂化材料：有序自组装及协同介电性能

项目名称： 多金属氧簇/嵌段共聚物杂化材料：有序自组装及协同介电性能

项目编号： No.21274053

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 李昊龙

作者单位： 吉林大学

项目金额： 80万元

中文摘要： 低介电材料是现代微电子工业的研究热点。聚合物杂化低介电材料由于兼具聚合物组分的优良加工性和无机组分的高稳定性等优点，受到广泛关注。近期研究表明,将多金属氧簇引入聚合物基体可以获得具有较低介电常数的杂化材料，但是关于材料结构与介电性质之间的关系还不够清楚。因此，构筑结构清晰而且可调的聚合物/多金属氧簇杂化材料将有助于阐明上述科学问题，为优化材料的介电性能提供指导。鉴于嵌段共聚物在构筑有序结构方面的独特优势，在本项目中，我们拟通过多金属氧簇与嵌段共聚物特定链段之间的非共价键相互作用，将其引入嵌段共聚物的相分离微区中，来制备基于二者的有序杂化材料。我们预期多金属氧簇在聚合物基体中形成的杂化微区能够增大有机无机接触界面，增强界面自极化效应，从而降低材料的介电常数和损耗。而且，我们拟通过调控微相分离状态来优化材料的介电性能，总结材料结构对其介电性质的影响规律，最终提出此类材料的设计原则。

中文关键词： 嵌段共聚物；相分离；杂化材料；自组装；多金属氧簇

英文摘要： Dielectric material is now a hot topic in micro-electronic research. Low dielectric polymer hybrid materials have attracted considerable attention because they combine the advantages of the good processability of polymer components and the high stability of inorganic components. Recently, it has been reported that the incorporation of polyoxometalates (POMs) into polymer matrices leads to hybrid materials with low dielectric constant. However, the relationship between the material structure and the dielectric properties are still ambiguous. Therefore, the fabrication of polymer-POMs hybrid materials with ordered and adjustable structures is favorable for the illustration of the above scientific question, which should also be instructive for the optimization of the dielectric properties of hybrid materials. Considering that block copolymers have unique advantages in constructing ordered structures. In this project, we plan to fabricate hybrid materials based on POMs and block copolymers, through incorporating POMs into the micro-phases of block matrices by non-covalent interactions. We presume that the hybrid phases formed by POMs in the polymer matrices can increase the area of organic-inorganic interface and enhance the self-polarization effect, which can lower the dielectric constant and loss the hybrid materi

英文关键词： block copolymer；phase separation；hybrid material；self assembly；polyoxometalate