Oligomers and Polymers from Dehydrocoupling of Hydrosilanes

这一无机化学、生物无机化学和金属有机化学项目的奖项支持密苏里大学圣路易斯分校化学系Joyce Y.Corey博士对硅聚合催化剂的研究。她将开发改进的有机金属化合物，以促进氢硅烷的偶联，形成硅功能链、环和聚合物。二氯二(环戊二烯)金属化合物(金属为锆钛或氢氟化氢)与丁基锂的组合催化剂已用于此目的，但尚未实现链长和结构的控制。Corey将改变催化剂的结构以及所使用的金属，以针对特定的链状化合物的合成，并在此过程中提高对脱氢偶联的催化要求的理解。新型单体也将用于脱氢偶联反应，以形成新型低聚物和聚合物。%由硅链形成的聚合物形成了各种具有潜在有用电子性能的材料。报道了它在乙烯基单体的光导、微影、光引发聚合等方面的一些应用。操纵这些材料的性能将需要合成方法，这些方法可以控制聚合物链的长度、形状和官能团的附着。乔伊斯·Y·科里博士将探索其他合成方法，以控制硅聚合物形成中的一些因素。

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.