SYNTHESIS AND CHARACTERIZATION OF TRIMETHYLSILYL-SUBSTITUTED POLYSILANE

XING Xin; LI Xiaodong; LIU Lin; FANG Qingling; WANG Jun

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SYNTHESIS AND CHARACTERIZATION OF TRIMETHYLSILYL-SUBSTITUTED POLYSILANE

Research Article | 更新时间：2021-03-19

- SYNTHESIS AND CHARACTERIZATION OF TRIMETHYLSILYL-SUBSTITUTED POLYSILANE
- Acta Polymerica Sinica Issue 5, Pages: 428-433(2007)
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- Published：20 May 2007，
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XING Xin, LI Xiaodong, LIU Lin, FANG Qingling, WANG Jun. SYNTHESIS AND CHARACTERIZATION OF TRIMETHYLSILYL-SUBSTITUTED POLYSILANE. [J]. Acta Polymerica Sinica (5):428-433(2007)
DOI：

XING Xin, LI Xiaodong, LIU Lin, FANG Qingling, WANG Jun. SYNTHESIS AND CHARACTERIZATION OF TRIMETHYLSILYL-SUBSTITUTED POLYSILANE. [J]. Acta Polymerica Sinica (5):428-433(2007) DOI：

摘要

利用聚甲基硅烷（PMS）的高分子反应合成三甲基硅基取代聚硅烷(SPS)

研究其分子组成与结构

热分解性能和导电性能等.FT-IR、 1H-NMR、 29Si-NMR、UV和GPC分析表明

SPS具有Si—Si相连的主链结构

侧链的部分取代基中含有三甲基硅侧基.SPS可溶于一般常见的有机溶剂

其热分解特性表明

陶瓷产率为44%

可用作SiC陶瓷先驱体.通过热交联反应可以有效提高其分子量

将其与碘掺杂

电导率为10-6 S/cm量级

在半导体范围.

Abstract

A new class of polysilane polymers containing pendant silyl substituents

named trimethylsilyl-substituted polysilane (SPS)

was prepared by polymer reaction of polymethylsilane and characterized by means of FT-IR

1H-NMR

29Si CP MAS-NMR

UV and GPC

respectively.This polymer is soluble in common organic solvents

and its molecular weight can be increased by crosslinking reaction.The property of pyrolysis shows that its ceramic yield is 44%

and it is a potential preceramic polymer.The conductivity of SPS can be as high as 10-6 S/cm in the range of semi-conductor after being doped with iodine due to the possibly wider σ-delocalized system caused by the silicon substituents.

关键词

三甲基硅基取代聚硅烷聚甲基硅烷高分子反应半导体性能

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