Synthesis and Application of Novel pi-Conjugated Polymers : Thiohene-Silole Copolymers.

新型π共轭聚合物的合成与应用：噻吩-硅杂环戊二烯共聚物。

基本信息

批准号：
04555203
负责人：
TAMAO Kohei
金额：
$ 3.97万
依托单位：
KYOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Developmental Scientific Research (B)
财政年份：
1992
资助国家：
日本
起止时间：
1992 至 1993
项目状态：
已结题

项目摘要

The new results obtained in this study are summarized as the following three aspects.1. Thiophene-Silole Cooligomers and Copolymers : Correlation between Structure and Some Properties.Thiophene-silole (silacyclopentadiene) copolymers, consisting of electron-excessive thiophene rings and electron-deficient silole rings, have been designed and the cooligomers and copolymers having thiophene-silole-thiophene skeleton (thiophene/silole ratio ; 2/1) as a monomer unit have been synthesized. The obtained new pi-conjugated systems exhibited unique optical properties, such as enormous bathochromic shifts in UV-visible absorption. Other thiophene-silole copolymers with thiophene/silole ratio 3/1 and 4/1 have also been prepared to evaluate the correlation between structures of polymer main chain and some properties. It has been found that an increase in the silole ratio in main chain leads bathochromic shifts in UV-visible region and an increase in the thiophene ratio leads high conductivities up … More to 2.4 S cm^<-1> with iodine-doping.2. Synthesis and Properties of Thiophene-Cyclopentadienone Cooligomers.Thiophene-cyclopentadienone cooligomers, consisting of electron-excessive thiophene rings and electron-deficient cyclopentadienone rings, have been synthesized as a model of the copolymers based on nickel(0)-promoted intramolecular cyclization of diyne derivatives and isocyanides. The cooligomers displayd considerable long-wave absorptions and exceptionally small bandgaps.3. Novel Synthesis of 2, 5-Difunctional Siloles.On the basis of a conceptually new endo-endo mode reductive intramolecular cyclization of diethynylsilanes has been first developed the new general synthetic route to 2, 5-difunctional siloles, such as 2, 5-dilithio-, dibromo-, and distannnylsilole, which are essential to synthesis of silole-containing novel pi-conjugated polymers. Moreover, 2, 2'-bisilole consisting of two silole rings, which have some interesting features in the structure and the electronic structure, has also been prepared as a model of promising target polymers, polysiloles. Less

本研究中获得的新结果总结为以下三个方面。1。 Thiophene-Silole Cooligomers and Copolymers: Correlation between Structure and Some Properties.Thiophene-silole (silacyclopentadiene) copolymers, consisting of electronic-excessive thiophene rings and electronic-deficient silole rings, have been designed and the coolologmers and copolymers having thiophene-silole-thiophene skeleton (thiophene/silole ratio; 2/1）作为单体单元已合成。获得的新的PI偶联系统表现出独特的光学特性，例如紫外可见的抽象中的巨大batholomic偏移。其他具有噻吩/硅洛烯比3/1和4/1的噻吩 - 硅烯丙基共聚物也已准备好评估聚合物主链结构与某些特性之间的相关性。已经发现，主链中的硅氧球比的增加导致紫外可见区域的茎颜色转移，硫芬比的增加会导致高电导率上升…含碘掺杂的较高到2.4 s cm^<-1> 2。由电子 - excessive噻吩环和电子缺陷的环戊二烯环组成的噻吩 - 环戊烯酮冷却剂的合成和性能已被合成为基于镍（0）镍（0）型内部环化剂的共聚物的共聚物模型。冷酷的人表现出相当大的长波滥用和异常小的带盖。3。 Novel Synthesis of 2, 5-Difusional Siloles.On the basis of a conceptually new endo-endo mode reduced intramolecular Cyclization of diethynylsilanes has been first developed the new general synthetic route to 2, 5-difunctional Siloles, such as 2, 5-dilithio-, dibromo-, and Distannnylsilole, which are essential to synthesis of silole-containing novel PI结合聚合物。此外，由两个硅质环组成的2、2--二硅硅质在结构和电子结构中具有一些有趣的特征，也已作为承诺的靶点聚合物，多硅烷的模型制备。较少的