Inorganic/Organic Hybrids with Controlled Topology and Composition

9871450 Matyjaszewski拟议的研究探索通过控制聚合这两个部分生产的无机/有机杂化材料的合成和表征。双嵌段、三嵌段、星形和梳状共聚物将是杂化材料设计中使用的基本结构。无机链段将使用聚硅烯、聚磷腈和聚硅氧烷。苯乙烯、丙烯酸酯和甲基丙烯酸酯的原子转移自由基聚合(ATRP)将提供具有预定分子质量和低多分散性的有机链段。杂化产物的组成、相对分子质量、多分散性和构型将影响组分的相容性、形态、热性能和力学性能。无机和有机链段的结构参数将被系统地改变，以使它们与杂化材料的宏观性质相关联。无机和有机聚合物有几个优点，但也有每个类别特有的缺点。通过共价键将无机和有机聚合物结合在一起合成的杂化材料应该能够优化一段的电子、光学、生物和环境性能，同时改善另一段的机械性能和加工性，并探索杂化结构特有的新特性。***

9871450 Matyjaszewski The proposed research explores the synthesis and characterization of inorganic / organic hybrid materials produced by controlled polymerization of both segments. Diblock, triblock, star and comb-like copolymers will be the fundamental architectures utilized in the design of the hybrids. Polysilylenes, polyphosphazenes and polysiloxanes will be used as the inorganic segments. Atom transfer radical polymerization (ATRP) of styrenes, acrylates and methacrylates will afford organic segments with predetermined molecular weights and low polydisperisties. The product composition, molecular weight, polydispersities and architecture of the hybrids will influence component miscibilities, morphologies, thermal and mechanical properties. The structural parameters of inorganic and organic segments will be systematically varied to correlate them with the macroscopic properties of hybrids. %%% Inorganic and organic polymers have several advantages but also some drawbacks specific for each category. The hybrid materials synthesized by combining inorganic and organic polymers via covalent linkages should enable optimization of the electronic, optical, biological and environmental properties of one segment in conjunction with improved mechanical properties and processibility imparted by the other and explore new properties specific for the hybrid structure. ***