佩多:嘘
乙二醇
材料科学
聚(3,4-亚乙基二氧噻吩)
化学工程
高分子化学
X射线光电子能谱
PEG比率
电导率
导电聚合物
磺酸
阳离子聚合
复合数
聚合物
化学
复合材料
物理化学
财务
经济
工程类
作者
Zhihui Wang,Yujie Qi,Jingkun Xu,Xie Hu,Ping Chen
标识
DOI:10.1016/j.apsusc.2004.12.051
摘要
A series of poly(3,4-ethylenedioxythiophene)–poly(styrenesulfonic acid) composite thin films with prescribed concentrations of poly(ethylene glycol) were prepared. The PEDOT–PSS pristine film and PEDOT–PSS/PEG films were studied using four-probe method, photoelectron spectroscopy and atomic force microscopy. The electrical conductivity of PEDOT–PSS/PEG hybrid films was found to be enhanced compared to the PEDOT–PSS pristine film, depending on the PEG concentration and molecular weight. XPS analysis and AFM results showed that PEG induces the phase separation between the PEDOT–PSS conducting particles and the excessive PSSNa shell. Simultaneously PEG may form hydrogen bond with sulfonic groups of PSSH, and hence weaken the electrostatic interactions between PEDOT cationic chains and PSS anionic chains. These resulted in the creation of a better conduction pathway among PEDOT–PSS particles, attributed to the improvement of conductivity.
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