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XPS Study of Competing Doping Behavior of Polyaniline
Lin Weiwei,Nan Junyi,Tian Yonghui,Liang Huijian
Author NameAffiliationE-mail
Lin Weiwei Department ofPolymer Science and Engineering, Zhejiang University, Hangzhou 310027 op1-ipp@ema.zju.edu.cn  
Nan Junyi Department ofPolymer Science and Engineering, Zhejiang University, Hangzhou 310027  
Tian Yonghui Department ofPolymer Science and Engineering, Zhejiang University, Hangzhou 310027  
Liang Huijian Department ofPolymer Science and Engineering, Zhejiang University, Hangzhou 310027  
Abstract:
Thestructure and protonation levelof conductive polyaniline (PANI) chemicallysynthesized in different reactive systems have been investigated using X-ray photoelectron spectroscopy (XPS). Polyaniline prepared in hydrochloric acid aqueoussolution easily undergoes deprotonation under prolonging exposure to vacuum at 60℃. When polyaniline was prepared by solution of coexistence of sodium dode-cylbenzene sulfonate (SDBS) and hydrochloric acid, two kinds of counterion (DBS-and Cl-) occurred competing doping behavior. The results reveal that DBS-take part in associating with positively charged polyaniline backbone, and that the N1sand S2pXPS core levelspectraare verysimilar to thatof polyani-line doped by dodecylbenzene sulfonate acid (DBSA) alone.Howerer, SDBS-HCl coexisting system is more favorabale than that of DBSA alone.
Key words:  Conductive polymer, Polyaniline, Competing Doping, XPS
FundProject:
XPS研究聚苯胺的竞争掺杂行为
林薇薇*,南军义,田永辉,梁辉建
摘要:
采用X射线光电子能谱(XPS)方法对不同反应体系下化学合成的聚苯胺(PANI)的结构和掺杂状况进行了研究。发现盐酸(HCl)掺杂的聚苯胺在样品后处理过程中易发生脱掺杂行为;在十二烷基苯磺酸钠(SDBS)和盐酸共存体系下合成聚苯胺时,对阴离子DBS-和Cl-发生竞争掺杂行为。结果表明DBS-与带正电荷聚苯胺链结合,起到了掺杂和诱导聚苯胺可溶性的作用,它的N1s和S2p谱图与单独采用十二烷基苯磺酸(DBSA)掺杂聚苯胺的谱图相似。但SDBS-HCl复合体系比单独采用DBSA体系更为有利。
关键词:  导电高分子  聚苯胺  竞争掺杂  XPS
DOI:10.1088/1674-0068/13/5/592-598
分类号: