Formation mechanism of polyaniline: Evidence from the post-reactions of isolated intermediates using

NCU Institutional Repository > 理學院 > 化學研究所 > 期刊論文 > Item 987654321/28406

jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://ir.lib.ncu.edu.tw/handle/987654321/28406

题名:	Formation mechanism of polyaniline: Evidence from the post-reactions of isolated intermediates using
作者:	Chiou,YH;Wu,CG
贡献者:	中央大學
关键词:	CHEMICAL POLYMERIZATION;ELECTRICAL-CONDUCTIVITY;GROWTH-MECHANISM;OXIDATION;ANILINE;ELECTROPOLYMERIZATION;NUCLEATION;SPECTRA;STATES
日期:	1997
上传时间:	2010-06-29 19:48:12 (UTC+8)
出版者:	化學研究所
摘要:	The formation mechanism of Polyaniline was derived from the post reactions of the polymerization intermediate. The intermediate, RPAN, (3000 angstrom thickness film, purplish-blue in color) was isolated on silane modified substrates after polymerization for 10 minutes. Under air, RPAN converts to emeraldine salt within a couple of seconds. In the inert atmosphere, the conversion occurred at a relatively low speed. In acidic media, the intermediate was believed to be a very reactive radical cation, which oxidized then coupled with aniline oligomers to start the auto-catalytic chain growing process. When the radical cation was quenched in water or acid, a violet species, IPAN, with a structure composed mostly of pernigraniline units, was formed. IPAN reacts slowly with aniline oligomers in the presence of protons and oxidants to emeraldine. The conversion processes were monitored by IR and Uv/Vis/NIR spectroscopy.
關聯:	JOURNAL OF THE CHINESE CHEMICAL SOCIETY
显示于类别:	[化學研究所] 期刊論文

文件中的档案:

档案	描述	大小	格式	浏览次数
index.html		0Kb	HTML	566	检视/开启

在NCUIR中所有的数据项都受到原著作权保护.

社群 sharing