Polycarbosilanes as Precursors to Ceramics and as Functional Polymeric Materials

这一奖项授予伦斯勒理工学院的伦纳德·因特兰特教授和托马斯·苹果教授，并得到了化学部先进材料和加工计划的支持。本研究的主题是聚碳硅烷作为陶瓷前驱体和功能聚合物材料的设计、合成和表征。主要有三个方向：(1)新型聚硅亚甲基及其超支化类似物的合成和应用；(2)聚硅乙烯和其他聚碳硅烷的链动力学、交联和裂解研究；(3)新型聚硅亚甲基-聚硅氧烷共聚物的合成和表征。将制备结构类似于全碳聚合物和聚磷腈聚合物的含硅聚合物，并对它们的性能进行比较。目标应用将是硅-碳、硅-碳-氧和硅-碳-氮陶瓷的陶瓷前驱体，锂电池的聚电解质和开放网络微孔固体。这个跨学科的奖项将把硅化学和聚合物科学结合起来，让学生接触到现实世界的应用。从单体合成、聚合、聚合物表征和链动力学到衍生陶瓷、电解液和介孔固体的性能测量等广泛的活动将提供丰富的学习环境，并可能导致新的硅基材料的出现。

This award to Professors Leonard Interrante and Thomas Apple at Rensselaer Polytechnic Institute is supported by the Advanced Materials and Processing Program in the Chemistry Division. The theme of the research is the design, synthesis and characterization of polycarbosilanes as ceramic precursors and functional polymeric materials. Three main directions will be explored: (1) synthesis and applications of new poly(silylenemethylenes) and their hyperbranched analogs; (2)investigation of chain dynamics, crosslinking, and pyrolysis of poly(silaethylene) and other polycarbosilanes; and (3) synthesis and characterization of new poly(silylenemethylene)-polysiloxane copolymers. Silicon-containing polymers structurally analogous to all-carbon and polyphosphazene polymers will be prepared and their properties compared. Targeted applications will be ceramic precursors for silicon-carbon, silicon-carbon-oxygen and silicon-carbon-nitrogen ceramics, polyelectrolytes for lithium batteries and open network microporous solids. This interdisciplinary award will combine silicon chemistry with polymer science and will expose students to real world applications. A broad range of activities ranging from monomer synthesis, polymerization, polymer characterization and chain dynamics to property measurements of derived ceramics, electrolytes and mesoporous solids will provide a rich learning environment and possibly lead to new silicon-based materials.