Oligomers and Polymers from Dehydrocoupling of Hydrosilanes

该奖项在无机，生物无机和有机化学 化学计划支持硅催化剂的研究 由Joyce Y博士进行聚合。科里的 密苏里大学圣路易斯分校化学系。 她将开发改进的有机金属化合物， 偶联氢硅烷以形成硅官能链， 环和聚合物。 组合催化剂 二氯双（双）金属化合物，其中金属 是Zr、Ti或Hf，丁基锂已用于此 目的，但控制链长和结构没有 办妥了一批多年想 科里会改变催化剂的结构 以及用于合成 特定的链状化合物，并在此过程中， 了解催化剂的要求， 脱氢偶联 新型单体也将用于 脱氢偶联反应形成新的低聚物， 聚合物 %%% 由硅链形成的聚合物形成多种聚合物。 具有潜在有用的电子特性的材料。 在光电导、微光刻和微电子技术中的一些应用 乙烯基单体的光引发聚合已经 报道 对这些材料性质的操纵 将需要合成的方法，可以控制的长度， 聚合物链，它的形状，和功能的连接， 组 Joyce Y.博士科里将探索更多的合成 控制这些因素中的一些因素的方法， 硅聚合物。

This award in the Inorganic, Bioinorganic, and Organometallic Chemistry program supports research on catalysts for silicon polymerization to be carried out by Dr. Joyce Y. Corey of the Department of Chemistry, University of Missouri-Saint Louis. She will develop improved organometallic compounds to promote coupling of hydrosilanes to form silicon-functional chains, rings, and polymers. Combination catalysts of dichlorobis(cyclopentadienyl)metal compounds, where the metal is Zr, Ti, or Hf, with butyl lithium have been used for this purpose, but control of chain length and structure have not been achieved. Corey will vary the structure of the catalyst as well as the metal used in order to target the synthesis of specific catenated compounds and, in the process, improve understanding of the catalytic requirements for dehydrocoupling. New types of monomers will also be used in the dehydrocoupling reactions to form novel oligomers and polymers. %%% Polymers formed from chains of silicon form a variety of materials which have potentially useful electronic properties. Some applications in photoconduction, microlithography, and photoinitiated polymerization of vinyl monomers have been reported. Manipulation of the properties of these materials will require synthetic methods which can control the length of the polymer chain, its shape, and the attachment of functional groups. Dr. Joyce Y. Corey will explore additional synthetic methods which control some of these factors in the formation of silicon polymers.