权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Design and Synthesis of Soluble Network Polysilane and the New Process of SiC Formation

可溶性网络聚硅烷的设计合成及SiC形成新工艺

基本信息

批准号：
07555290
负责人：
WATANABE Akira
金额：
$ 0.51万
依托单位：
Tohoku University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1996
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07555290/
关键词：
polysilane network polysilane precursor SiC Sic シリコンカーバイト

项目摘要

The network polysilane has a two-dimensional silicon network structure and organic side chains, which shows both properties of organic and inorganic materials. The network polysilane has high stability due to the silicon network structure. The organic side chain gives the solubility to the network polysilane. In this work, we carried out the molecular design and the synthesis of the network polysilanes which have various kinds of silicon skeletons and organic side chains. The change of the optical and electrical properties of the network polysilanes was investigated during the heat treatment. The effects of the silicon skeleton on ttheoptical and electrical properties by the heat treatment were discussed.The absorption and emission spectra of a network polysilane were compared with those of a linear polysilane. The optical band gap of the network polysilane was lower than that of the linear polysilane, which suggests the two-dimensional silicon skeleton of the networl polysilane. In th … More e thermal analysis, the network polyilane showed the higher thermal stability compared to the linear polysilane. The weight loss of the poly (phenylsilyne) is lower than 30% by the heat treatment at 1000oC.The spin-coated film of the poly (phenylsilyne) gave a SiC thin film by the heat treatment in one-step. The XPS spectra of the SiC film indicated the carbon content higher than the silicon content. To decrease the carbon content, network polysilane with various organic side chains were synthesized. The heat treatment of the poly (n-propylsilyne) showed lowest carbon content due to the elimination of the propyl group. The synthesis of polysilanes has been carried out by the Kipping reaction using a fused sodium metal in a hot toluene. The hard reaction condition was one of the problems for the industrial application. A new synthetic route by the electorolysis of a trichloroorganosilane using a magnesium electrode was developed. As a precursor for inorganic films, new organometatic polymers having silylene and aromatic units were synthesized. Less

网状聚硅烷具有二维硅网状结构和有机侧链，兼具有机和无机材料的性质。由于硅的网络结构，网状聚硅烷具有很高的稳定性。有机侧链赋予了网状聚硅烷的溶解性。在这项工作中，我们开展了具有各种硅骨架和有机侧链的网络型聚硅烷的分子设计和合成。研究了网状聚硅烷在热处理过程中光学和电学性质的变化。讨论了热处理过程中硅骨架对光电性能的影响，比较了网状聚硅烷和线型聚硅烷的吸收光谱和发射光谱。网状聚硅烷的光学带隙小于线型聚硅烷的光学带隙，说明网状聚硅烷是二维硅骨架。在此…中热分析表明，与线型聚硅烷相比，网状聚硅烷表现出更高的热稳定性。经1000oC热处理后，聚苯基硅炔的失重率小于30%。聚苯基硅炔的旋涂薄膜通过一步热处理得到了碳化硅薄膜。XPS分析表明，碳化硅薄膜的碳含量高于硅含量。为了降低碳含量，合成了具有不同有机侧链的网状聚硅烷。热处理后的聚(正丙基硅炔)由于丙基的消除，碳含量最低。聚硅烷的合成是通过在热的甲苯中使用熔融金属钠的Kiping反应进行的。难反应条件一直是困扰工业应用的问题之一。提出了一种用镁电极电解三氯有机硅烷的新合成路线。作为无机薄膜的前驱体，合成了含有硅烯和芳香族单元的新型有机金属聚合物。较少