有机/无机杂化大分子的自组装结构与相关性能研究

通过化学键将有机高分子和无机纳米颗粒结合起来可获得一类独特的物质—有机/无机杂化大分子。有机/无机杂化大分子兼具聚合物和无机物的特性。组分间的不相容性会驱使杂化大分子自组装（微相分离）形成有机和无机相共存的微相结构。改变杂化大分子的拓扑结构和组分间的相互作用，可以构建各种具有不同微相结构的高性能材料，如兼具无机物强度和高分子韧性的材料。. 本课题将探索有机/无机杂化大分子自组装行为及性能。首先，设计合成不同拓扑结构的有机/无机杂化大分子，运用实验和理论模拟相结合的方法，研究其自组装行为，明确拓扑结构和组分间相互作用等因素对自组装行为及微相结构的影响规律。然后，研究有机/无机杂化大分子的力学和电磁学性能，掌握这些性能的特点，阐明相关机理。通过研究，实现分子设计—微相结构构建—性能可控的目的。为有机/无机材料作为高性能结构材料以及结构/功能一体化材料奠定基础。

Organic/inorganic nanostructures constructed from organic-inorganic hybrid polymers (OIHP) bear distinct properties. For example, the combination of the viscoelasticity of polymers and rigidity of inorganic components can overcome the flaws inherent in either the polymers or inorganic materials, such as the low modulus of macromolecules and the brittleness of inorganic materials. To date, the self-assembly behavior of OIHP as well as the microstructures of the nanophase materials has not been well documented.. In this proposal, we aim to study the self-assembly behavior of OIHP and properties of the constructed organic/inorganic nanophase materials. This research could be of significance. From the academic viewpoint, there is limited knowledge on the mechanism of self-assembly of OIHP. Due to the differences in the organic polymers and inorganic nanoparticles, the phase behaviors could be highly complicated. In the aspect of applications, a deep understanding of the properties of OIHP is helpful for the design and fabrication of advanced materials.. There are five targeted scientific issues in this proposed studies. 1) Synthesis and characterization of the organic-inorganic hybrid polymers. OIHP with various topologies will be designed and synthesized. 2) Microstructures of organic-inorganic hybrid polymer assemblies. OIHP can self-assemble into nano-sized microstructures with organic and inorganic domains coexisting. The effect of molecular architecture and interactions between components on the microstructures of various OIHP will be studied by a combination of experiments and theoretical simulations. 3) Dynamic process of the formation of organic-inorganic hybrid polymer assemblies. Combining the experiments and simulations, the influence of molecular architecture of OIHP and interactions between components on the dynamic process of microstructure formation will be studied. Moreover, the universal laws will be summarized. 4) Mechanical properties of organic/inorganic hybrid materials. The influence of molecular architecture of OIHP, interactions between components, and micro-phase structure on the static and dynamic mechanical properties will be evaluated by experiments and simulations. 5) Electromagnetic properties of organic/inorganic hybrid materials. The effect of organic-inorganic micro-phase structure, especially the hierarchical microstructure on the electromagnetic properties, including wave absorbing and transmitting properties will be examined by the combination of experiments and simulations. Through above investigations, we intend to fulfill the goal, i.e., to gain controllable hybrid microstructures and controllable properties of OIHP.